Hidden Elf Village

This is a Small Secluded World populated by a tribe or group who comes to the pragmatic decision that what goes on outside their borders no longer is or has never been their problem, and choose to hole themselves up in some distant or inaccessible location because of some ancient evil or out of general disgust of others. If the villagers aren't outright xenophobic, they're only as polite as they need to be once they suggest you not stay very long. Especially isolationist villages may even consider outsider to be "Not Of the People". Just as often, they manage to become a fantastically rich City of Gold, harmonious Ghibli Hills, or at the least a pretty decent place to live (just mind the dark secret), A recent interpretation of the trope is that even if you can keep your isolation from destroying you, the rest of the world will judge you by the few they encounter: those you cast out. You'll be judged by your garbage. Oh Crap. Compare City in A Bottle.

May be justified if the setting is Post Apocalyptic and hiding out allowed them to escape The End of the World As We Know It. In this case, expect much in the way of What If angst and a running debate of My God What Have I Done vs I Did What I Had to Do. Depending on where the story is on the Sliding Scale of Idealism vs. Cynicism, the protagonist may choose to Must Make Amends or just shrug.

If the village is well planned by the writers, there's a good chance that someone in the main cast is a member, especially an exile, of this group. There's also a chance that a reformed villain might shack up here in the epilogue, as he'd be rejected elsewhere. Of course, this could also be an Ass Pull.

Although the moral is sometimes about respecting other people's opinions and pacifist approaches to violence, this trope is usually tied into An Aesop about evil happening when good men do nothing. Expect the inhabitants of the village to turn around their opinions and slowly reintegrate themselves into the surrounding culture. In video games, this usually happens just as one of the villains burns down the village after its airtight defenses naturally go completely to pot. Don't expect them to be that big of a help afterwards, though.

This is Older Than Radio: it was well enough known in the 18th century that both Swift and Voltaire could satirize it effectively (the island of the Houyhnhnms in Gulliver's Travels and El Dorado in Candide, respectively). This is also somewhat Truth in Television. Japan, for instance, was mostly cut off from the rest of the world by government policy, as were Burma and Tibet at different times. See Neutral No Longer for when the people in this village can no longer stand by quietly.

Inhabitants are not required to be Elves, but you can expect Space Amish or Space Elves of the Proud Scholar Race sort and especially Perfect Pacifist People to reside here. Can be a Close Knit Community. May contain a Superweapon Surprise.

Tree Top Town is a common subtrope. If they're highly advanced, see Advanced Ancient Acropolis. If supposedly mythical creatures live there, it's a Fantastic Nature Reserve.

Anime and Manga

 * Ashitaka's Emishi tribe in Princess Mononoke, though as the last surviving pocket of an ethnic group thought to have been wiped out centuries ago, their strictly-enforced isolationism isn't without reason.

Card Games

 * The kithkin, a race of halflings in Magic the Gathering's Shadowmoor setting, are paranoid and xenophobic in the extreme, holing themselves up in walled castles and brandishing Torches and Pitchforks against anyone who isn't just like them.
 * In the backstory for the Duel Terminal sets in  Yu-Gi-Oh, the Ice Barrier monsters play this role, choosing to stay back and protect said barrier rather than help fight the Worm invasion.
 * Pictured above is "Secret Village of the Spellcasters".

Comic Books

 * Comic book examples:
 * Themiscyra, a.k.a. Paradise Island (Hidden Amazon Village) in The DCU.
 * Attilan (Hidden Inhuman Village) in the Marvel Universe, which had the extra fun of getting moved about to stay hidden ? it began as a faux Atlantis in the Backstory which later became a Shamgri La, and then alternated between that role and being placed on the moon.
 * Sorrow's End in Elf Quest is an oasis in the middle of an inhospitable desert, established in an attempt to escape human persecution. The inhabitants aren't exactly hostile to outsiders, at least those of their own species, but they do end up having to defend it against hostile elves and later humans.
 * Blue Mountain may have been written as a darker counterpart to Sorrow's End - what if isolation goes far too far.
 * Daxam, in the DCU, is a hidden elf planet. Its inhabitants are incredibly racist and xenophobic, even after their lives are saved by the Green Lantern Corps.

Fanfiction

 * Equestria in The Son of the Emperor uses a magical barrier to completely isolate itself from the rest of the world. No one on the outside knows anything about it.

Film

 * The Bak'u homeworld from Star Trek: Insurrection.
 * The Village in The Village.
 * Star Wars, Episode 1, has the Gungan city, which meets all the requirements easily. Hidden apart from the rest of the world (underwater), main character (Jar-Jar) comes from there, and later they return to get the gungans to fight alongside them in the final battle.

Literature

 * Gondolin, Doriath, Nargothrond, Rivendell, and Lothlorien are all examples of this trope, if this trope allows for very large populations, advanced technology (for the setting), expeditionary armies, and large political ambitions. That said, some of them (especially Gondolin, Doriath, and Nargothrond) do have periods of isolation along this trope's lines, and two of them (Gondolin and Nargothrond) meet horrible ends at the hands of the Big Bad they were hiding from.
 * The Shire, however, is a classic Hidden Elf Village, apart from the dumpiness and furriness of its inhabitants; and Valinor is a Hidden Elf Village the size of the universe.
 * Another literary example: the various forms of Tanelorn in Michael Moorcock's writings, a city which exists as a sort of cosmic rest stop for the Eternal Champion, who nonetheless is always compelled to leave eventually.
 * Gormenghast might qualify, although to what extent its isolation is intentional isn't clear.
 * Literary example: In the Dragon Wars Saga, the elf realms of Andur'Blough Inninness and Tymwyvenne are both extremely secretive and magically protected (the former by a spell which prevents explorers from finding the place without being guided there, the latter by zombies and sleep-inducing pollen).
 * Kevin J Anderson's Gamearth Trilogy has a female player sneak into the game room at night paint a Hidden Elf Village on a single tile of the hexagonal world map, then paint over it. Since the game is magic and their PC's are rapidly becoming self-aware, when the party lands on the seemingly blank space the next morning, the village is there, waiting for them.
 * In Tad Williams' Memory Sorrowand Thorn series, the Sithi city of Jao é-tinukai'i is one of these. To be fair, they had plenty of justification: they were on the losing end of a catastrophic war and had been hunted by humans for centuries thereafter. That doesn't stop their Always Chaotic Evil counterparts, the Norns, from taking advantage of their isolationism to wreak all kinds of havoc, up to and including unleashing an unstoppable undead horror on the land. Furthermore, both the Sithi and Norns are exiles from a mythical land far to the west of Osten Ard known as the Garden.
 * The entire Land of Oz, situated as it is inside an impenetrable desert that kills anyone who tries to cross it.
 * In Liliths Brood by Octavia Butler, there is a hidden mountain village where the citizens have become so isolated from the rest of the world that they all suffer horrible genetic diseases from inbreeding.
 * Galt's Gulch in Atlas Shrugged. Initially, it's just a retreat from the awful proletariat, becoming this in time. (Deconstructed in Bio Shock.)
 * The entire Wizarding World in Harry Potter.
 * Subverted in Terry Brook's Shannara collection, where it's pointed out in Elfstones that while the Elves and other Faerie creatures used to live by this standard, it aided in general apocalypse and thus when humanity started to rebuild, they joined the newly formed races.
 * Becomes a plot point in the later Scions of Shannara series, where due to the arrival of the Shadowen, the Elves have once again formed a Hidden Elf Village, and it's absolutely necessary to bring them back.
 * Ellesmera from Eldest.
 * The Wheel of Time has several, most notably the Sea Folk isle of Tremalking and its surrounding archipelago, the Aiel holds (though those are more of "we kill you (or let you die of thirst) if you set foot on our land without things to sell us and we come out and kill you if you do something really, really dumb like chopping down that wonderous tree we gave you generations ago"), and the land of Shara.
 * You could technically count the Two Rivers, too, since until the middle of the series they were so isolated they were still using thatch roof and had next to no affiliation to the country they're part of.
 * In The Dark Tower: The Waste Lands by Stephen King, Eddie hopes to find this in the devastated city of Lud. Even saying, "Bring on those wise f*** in' Elves."
 * At the time, Eddie had just left the closest thing he was likely to find to a Hidden Elf Village in the Crapsack World of the Dark Tower, a hidden village of elderly folks who are always hiding from bandits and disguise their town as abandoned ruins by, well, living in a ruined town and not going outside a lot. They don't offer much in the way of sagely advice or magical / technological help, but they do set a mean table.
 * The Hawkbrothers' Vales in the Heralds of Valdemar.
 * The Tswana, as introduced in Empire of Ivory, is best described as a Hidden Dragon Empire... that forgoes the 'Hidden' part when they "abolish" the European slave ports.
 * In the Sime Gen series the Rathorites are a secret society/hidden community who have tools that could go a long way towards fixing the problems of the world, but won't reveal them because they could be misused.
 * Time Scout: Time Terminal 86 is hidden in a warren of tunnels inside the mountains of Himalaya.

Live Action TV

 * The Nox, of Stargate SG 1, have turned their entire planet into a Hidden Elf Village.
 * And over on Stargate Atlantis, the  discovered in the Pegasus Galaxy had hidden themselves away on a toxic planet through and since the Wraith/Ancient war.
 * Andromeda had Terazed, a planet in an out-of-the-way slipstream colonized by human and Nietzschean Commonwealth loyalists led by Dylan Hunt's former fiance. Thanks to a bit of time travel they knew that in 300 years Dylan and the Andromeda Ascendant would escape the black hole and attempt to rebuild the Commonwealth, so they prepared to reveal themselves at that time and became the restored Commonwealth's capital.
 * Also, Tarn-Vedra, the capital of the old Commonwealth, cut itself off from the slipstream through tesseract at the start of the Long Night. Eventually
 * Wonder Woman TV Series: Paradise Island is an uncharted island within the devil’s triangle. Queen Hippolyta has decided to occult Paradise Island from the world: In the pilot, she claims that no one in the last thousand years has ever found it. She also claims that any amazon who left the island may lost her immortality and become a mortal again.

Manga

 * In Ooku, the retreat of Tokugawa Japan from the rest of the world is given a different reasoning. A disease is killing off a many of the men and the privy council ruling in the name of the dead shogun fears the outside world moving in for easy pickings.

Tabletop Games

 * As RPG settings have grown in size and scope, so too have their Hidden Elf Villages. For example, both the Shadowrun and Iron Kingdoms campaign settings have Hidden Elf Nations: Tir Tairngire and Tir na nOg in Shadowrun, and Ios in the IK. D&D's Eberron campaign setting takes this a step further with Aerenal, a whole Hidden Elf Continent.
 * Aerenal is small though. Argonnessen is a Hidden Dragon Continent!
 * Although they aren't so much "hidden" as they are "we're right here, but we'll kill you if you set foot here without the correct forms, filled in in triplicate."
 * As Shadowrun is set in Earth 2050+ AD, Tir Tairngire and Tir na nOg occupy Oregon and Ireland, respectively. A lot of people are very annoyed.
 * The World of Greyhawk has a Hidden Elf Nation in the country of Celene, which refused to help its neighbours in the wars against the evil creatures that invaded them. Naturally, this generated a lot of ill will towards Celene. The elven race as a whole, though, is more nuanced in that they don't actually have anything against most other races and will provide help to refugees seeking food and heroes seeking aid, but are simply more comfortable living in their own communities than they are living among humans or other races. Even within Celene itself, there's a sizable number of elves who disagree with their queen's decision to stay out of the surrounding conflicts and actively work to help their human and dwarven neighbours.
 * Eldar Craftworlds and especially Exodite worlds in Warhammer 40000.
 * Exodite worlds maybe, but Craftworlds can hardly be said to avoid getting involved in others people's affairs.
 * Warhammer Wood Elves, of which Exodites are the futuristic expy also qualify for this trope. And being Warhammer, they are of the highly xenophobic, will kill you if you set foot in their forest kind.
 * Warhammer Fantasy's High Elves are also highly isolationist and bar non-Elves from their nation of Ulthuan (though they tolerate non-Elf visitors in the gateway city of Lothern).
 * And the Dark Elf lands are not open to visitors. At all. Any attempt to enter peacefully will probably result in slavery (well, you get in technically) or a barrage of massively poisoned crossbow quarrels.

Theater

 * Brigadoon is a classic example, enforced by magic. The town is set up so that it only appears in the outside world once every hundred years - while to the inhabitants, one hundred years "outside" pass with each day. And if anyone tries to leave the village after they've spent a night in it, the entire town will vanish. A Wizard Did It - well, actually a priest.

Video Games

 * Laruba Village in 65 Million BC in Chrono Trigger consists of humans that choose to hide from the Reptites rather than fight. It gets torched the second time you go to the time period.
 * Dragon Quest IV and Dragon Quest Monsters II each contain one of these. In both games, the most notable feature of the elven residents is their distrust of humans.
 * Final Fantasy games are fond of these. There's Tozus, the hidden gnome village in Final Fantasy III, the Black Mage village from Final Fantasy IX (of which Vivi was a member, though he had never been there before), the Shumi Village in Final Fantasy VIII, Thamasa in Final Fantasy VI, and the various Monster Towns in the early games are just a few examples. Most recently, we are presented with the village of the Viera in Final Fantasy XII, of which Fran is an exile of sorts.
 * Final Fantasy VIII also has the nation of Esthar, which spent seventeen years as a Hidden Elf Country.
 * Garifs of FFXII are a much more lighthearted version of this trope, though unlike Vieras: Garif laws aren't as strict, leaving the village is allowed, they have less of a distaste for outsiders(though they do show concern for how humes are violating the world), and Garif do eventually begin to consider getting involved with the outside world. The Garif are all Proud Warrior Race Guys and will practically give non-Garif proud warriors full access to the village(as is the situation with the game's main characters).
 * The Final Fantasy IX example however is more justified then the others: Black Mages are basically Golems and gain sentience somewhere along the way, the village being a hideout for them to escape the Big Bad who created them. Vivi is a special case and is vaguely hinted to be the prototype.
 * So is the whirlwind shrouded Cleyra, an off-shoot of another town.
 * Going back to Final Fantasy III, there's also the Dark Knight village, and Doga's Village, although they, and Tozus, aren't really of the xenophobic variety. They are actually a really good way to get powerful weapons and spells.
 * Tales of Symphonia has Heimdall, where many of the main characters (including the Big Bad) come from. Entering this village requires a writ of passage from the King of Tethe'alla, and even with it in hand, guards at the front of the village ban the half-elf members of your party from entering the village. For some reason, half-elves are pretty plentiful in both worlds (much more so than actual elves), despite there being only one village of elves that never associates with humans.
 * Somehow, four thousand years later, in Tales of Phantasia, its even better hidden, and now has another hidden village (specifically, a Ninja village) inside of it, like an isolationist Russian doll.
 * I'm pretty sure that Half-Elf/Half-Elf offspring is also Half-Elf. So at this point you no longer need Human/Elf pairings to sustain the population.
 * Tales of Symphonia also has Mizuho, a Hidden Ninja Village. Though in contrast to most examples, Mizuho is known for taking an interest in the outside world thanks to its intelligence network, those the village itself is still highly isolationist.
 * This is confirmed by talking to NPCs in Exire, the Hidden Half-Elf Village.
 * A successful example. Its so well hidden its unaffected by the turmoil on the ground.
 * Myorzo from Tales of Vesperia, which "hides" inside a floating jellyfish...
 * The original Vault 13 in Fallout was a clear-cut Hidden Elf Village, only getting in touch with the "savage" outside world when their own continued existence depended on it.
 * This is a running theme in Fallout 2, with Vault City, San Francisco and the Enclave, each more secluded and hostile to outsiders than the last.
 * This is a running theme in the Fallout series generally, since Vault 101 in Fallout 3 also avoids any contact at all with the outside.
 * Which.
 * Most of the examples are Vaults or the descendant polities of Vaults, which makes sense - the public purpose of the Vaults were to allow people that entered them to survive the atomic apocalypse, to re-emerge when the worst was over. The Vaults that actually did have that purpose tended to emerge into a world where the most common visitors were roving bands of bandits or monstrous beings (and where they were the only ones around to have kept a measure of high technology and an historical record). Add to that Vaults whose actual purpose required/was long-term isolation, like Vault 13 and Vault 101...
 * Fallout New Vegas has Nellis Air Force Base, populated by the Boomers, a highly isolationist faction obsessed with firepower and all too willing to use it upon outsiders who get too close to them. There's also Jacobstown, a small ski resort populated by mostly peaceful Super Mutants that isn't exactly a secret (though it is fairly remote) is generally left alone by the populace.
 * In Wild ARMs, the elf-like race of Elws transported their land to another dimension so that they won't have to experience the decay of the world resulting from the previous war.
 * In Lufia and the Fortress of Doom, the literal hidden elf village of Elfrea.
 * Suikoden III has a rare example of a non-elf Hidden Elf Village in an elf-bearing setting. The "Grasslanders" of Alma Kinan live in a deep forest behind an illusory veil or barrier of some sort, only emerging at the behest of their seers. They have a much more "elfin" style than the elves of the setting, who are more like Tolkien's Noldor.
 * The elves of Na-Nal from Suikoden IV hide in the forest as well, and consider themselves superior to the human natives. In reality, though, they're Not So Different: both sides are equally arrogant, and this leads to disaster.
 * Alseid from Suikoden V fits this trope exactly, with the elves vowing to stay separate from the "barbarous humans". Pretty much every non-human race is like this to begin with, as part of a "Accept People For Who They Are/Racism Is Bad" Stock Aesop.
 * Suikoden V's Beavers also mostly keep to themselves, not wanting to get too involved in the "humans' war". However, they haven't actually hidden their village, which has the expected results when
 * Suikoden Tierkreis  comes from a village like this.
 * Every Fire Emblem game has a Hidden Dragon Village where the humanoid Manakete dragons live. The exception being Fire Emblem: Path of Radiance and Radiant Dawn, those games have a Hidden Branded Village. Branded are exiled from society for being half-Beorc (human) and half-Laguz (a humanoid race who can turn into animals). The Dragon Laguz have a not-so-hidden country where they don't let anyone else in.
 * Shining Force II had the hidden fairy village, but it was more of a bonus area than anything. Pretty much the only notable things about it are a promotion item you can find in a chest and a bonus fight against infinitely spawning monsters (very useful for powerleveling, but it can be beaten by blocking the spawn points).
 * There is also a second hidden elf village near the end of the game that lets you talk to The Blacksmith who can craft the best items in the game for each class, finally making a use for all the Mithril you have collected.
 * Burkaqua Village in Rogue Galaxy.
 * Funny that no one brought up what was probably the Trope Namer, the Hidden Elf Village from Dragon Quest III.
 * Arcanum of Steamworks and Magick Obscura contains three - the city of the normal elves, the even more hidden city of the dark elves, and Tullia is the most hidden.
 * In Legend of Dragoon, the Wingley village in the forest of Mille Seseau qualifies, complete with main character who was exiled.
 * There's also Ulara, a Wingly town hidden in the Death Frontier: it's far more welcoming to visitors, however, as the inhabitants are primarily composed of winglies that assisted humans during the Dragon Campaign.
 * The Legend of Zelda Ocarina of Time has a literal hidden elf village, where the elves inside are held in by the guardian spirit, the Deku Tree. When said tree dies, monsters invade the village and make the elves even more afraid to leave once they get a new guardian spirit. They also have THE main character come from this village.
 * To be fair, Kokiri are not elves...but they are rather elf-like.
 * The Kokiri have the excuse that if they leave the forest, they die, which makes their isolationism very understandable. They also have no problem whatsoever with visitors - so it's more a case of circumstance than policy.
 * Zelda II the Adventure of Link also had an example of this, with a town in the later part of the game that required you to remove the right patch of trees in a forest to reveal it.
 * Romancing Sa Ga has Merholm, a small village hidden beneath some ruins deep in the desert. In this case, though,
 * Romancing Sa ga 2 had the Village of the Ancients.
 * Romancing Sa Ga 3 had Snow Town, a village of snowmen.
 * Secret of Mana has a village of, well not Elves, but Moogles. And you had to walk around a multiseasonal four screen forest until you unlock it.
 * Played much straighter in the sequel, Seiken Densetsu 3, where the Elf Village Diorre is hidden deep within the Lampflower Forest. To find it, players have to  Naturally, the elves are isolationist and unfriendly, and even when they recognize that you're trying to save the world, still charge for items and lodging.
 * The Guild of Weavers in Loom isolated themselves on an island community after being accused of witchcraft and chose to ignore the rest of the world.
 * Bio Shock features Rapture, a secret underwater city inspired by Galt's Gulch.
 * It's also a permutation of the Real Life concept of Seasteading, which is this trope mixed with City of Canals.
 * Bio Shock Infinite has an aversion. The flying city of Columbia was built as a demonstration of American ingenuity, so the designers wanted to show it off.
 * Runescape has Lletya, where... well, there's not much points of interest there...
 * World of Warcraft has the Shen'dralar elves hidden away in Dire Maul.
 * The High Elves also have out-of-the-way holdouts in Plaguelands and Hinterlands.
 * Not so much in the Plaguelands anymore., as they've all been, um, transformed as of Cataclysm.
 * All elf societies work on this to some degree. Before the wars and to varying degrees after, the Night Elves were almost completely reclusive. The Blood Elves also seem to be interested in just keeping to themselves for the most part.
 * The hidden elf villages in Dragon Age move around a lot, because the Dalish elves are gypsies.
 * Mass Effect 2 reveals that the Always Chaotic Evil Killer Robot geth are in fact the terrorist outcasts of a Hidden Elf Civilization, thus demonstrating yet another problem with the trope; if most of you just sit in your peaceful utopia, all most will see of you are the vicious jerks who go out and raise hell. Galactic Interpretation: All Geth Are Killer Robots.
 * Come to think of it, the batarians have a similar problem; their withdrawl from the Citadel (hub of interstellar diplomacy and trade) means that only the pirates still interact with the galaxy. Galactic Interpretation: All Batarians Are Pirates.
 * Less of an example because calling the batarian government North Korea IN SPACE would probably justify the butchers of Pyongyang asking for an apology, and said batarian government intentionally allows the scum to leave the inner planets purely to wage war on the humans.
 * The quarians, too; as a civilization of gypsies, they lack the resources to maintain prisons or the numbers to afford executions, they exile everyone they don't fine (children of exiles are innocent of their parent's crimes and can become citizens later). This means the only members of the species most encounter (other than the occasional Naive Newcomer on Pilgrimage) are the jerks they couldn't stand--con artists to serial killers. Galactic Interpretation: All Quarians Are Crooks.
 * Crystalis has the village of Oak, which is more of a Hidden Dwarf Village.
 * Odin Sphere has Pooka Village.
 * In Golden Sun, Vale is this, keeping themselves secret so knowledge of Psynergy doesn't get out. Shaman Village fits, too —when you arrive, the inhabitants won't even speak to you. Garoh is a hidden werewolf village, whose inhabitants (rightfully) fear the Fantastic Racism of humans.  also fits the description nicely, to the point of banishing a citizen who'd dared help our heroes.
 * Ayuthay initially appears to be this in Dark Dawn, but it's justified: they're under a siege at the time.
 * Dark Cloud features Brownboo village where the moon people live. They're out of sight and danger which is how they prefer it.
 * Earthbound and Mother 3 each have a separate Saturn Valley, the secluded homes of the Mr. Saturns. Earthbound also has Tenda Village, hidden in the Deep Darkness, which is the home of the shy Tenda tribe.
 * Kingdom of Loathing has one when ascended under a Mysticality sign. What, you say you're  yourself and not elfin in the slightest? Well, they are at least portrayed as studious, reclusive, living with nature and somewhat well-adorned, quite within the common fold of elven tropes.
 * The Man Eating Plant Pokémon Victreebel is said to live in huge colonies deep in jungles, though no one has ever returned from there.
 * The Man Eating Plant Pokémon Victreebel is said to live in huge colonies deep in jungles, though no one has ever returned from there.

Webcomics

 * The Hidden Elf Village in RPG World. This is eventually worked into the plot (if you can say RPG World has a plot); once, every N years, a competition of sorts happens between the Elves, Humans and Monsters to decide the dominant race on the planet. Since humans won the last one, Elves are forced to stay (en masse) in their village and can't settle elsewhere; they can leave their village, but are nomads if they do. Similarly, monsters are forced to stay in South City, or lose their minds and become the wandering monsters that the RPG Elements Web Comic relies on.
 * The Lost Kingdom of Skifander, in Girl Genius.
 * In the backstory of Erfworld, the kingdom of Faq was hidden by mountain terrain and a master-class Foolamancer. This allowed its king to indulge his preference for philosophy rather than warfare.
 * In The Inexplicable Adventures of Bob, the dragons lived peacefully in Earth's wildernesses for eons, until humans evolved and started picking fights with them. Rather than start what could only become an ugly race war, the dragons left Earth entirely, settling on the planet Butane.

Web Original

 * In the novel Theatrica the

Western Animation

 * Evil Chancellor Long Feng made the Earth Kingdom capitol Ba Sing Se ("Impenetrable City") into a Hidden Elf Village in Avatar: The Last Airbender. Though the city is not hidden from outsiders, it is nearly impossible to penetrate either the tall walls or the powerful bureaucracy. The city is under complete fascist control on the inside, and denies that there is any threat of war coming to the city -- indeed, it comes close to denying that there is a war outside the walls! The people inside are largely unaware of any danger in the outside world, and at the same time subtly convinced not to try to leave. Being too desperate to keep it this way bites him in the ass very hard.
 * "Comes close to denying there is a war"? It's been going on for a hundred years and the king doesn't know about it!
 * Citizens who start to learn the truth are taken away by Ba Sing Se's ninja secret police, the Dai Li. The Dai Li brainwash their victims into believing that there really is no such thing as a war.
 * Subverting the trope, though, Ba Sing Se's by far the largest city on the planet and is hardly inaccessible, as the huge stream of refugees shows. The Northern Water Tribe, at the North Pole and apparently having managed to stay out of a world war for 85 years, might be a clearer example. Before they were wiped out, the Air Temples might have fit this trope, too.
 * Flutter Valley in My Little Pony: The Movie.
 * And again in the new series with the pegasus ponies living on their own secret island hidden behind a waterfall.
 * The New Olympians and Avalon Clan in Gargoyles, and to a lesser extent the London Clan and the whole town of Ishimura. In fact, most gargoyle clans try to pull this off, except for the Manhattan Clan.
 * The tiny Twillerbee village from Barbie Presents Thumbelina is hidden in a field of flowers.
 * The hovering Avian city in the Teenage Mutant Ninja Turtles episode "Wing and a Prayer" is one of these, and can only be found with the help of a Y'Lyntian Crystal.
 * In the fifth episode of Generator Rex, Rex saves a guy who invites him to their Hidden Engineer Village (humanity as a whole has developed a Science Is Bad attitude since the Nanite Event).
 * The Smurfs! At least in the original books and the first few seasons of the TV show.
 * In The Smurfs and The Magic Flute, the Smurf Village could be reached by humans only through a magical method called "hypnokinesis".
 * Gummi-Glen
 * A strange example, even for this, on The Simpsons: Homer is taken to the underground Land of the Jockeys, where they threaten to eat his brain unless he throws the big horse race.

Real Life

 * Amish, Old Order Mennonites, most orders of monks (Christian or Buddhist) and other "non-wandering" ascetic or mystic sects usually abide by the "non-subverted" version of this trope. The Amish in particular pledge to "live in this world but not of it." They do let their kids live on the outside world for a time before deciding to stay in the order, however; strange, then that you don't see wandering Amish journeymen in fiction.
 * Brutally subverted in the case of the original Buddhist kingdom in Tibet commonly identified as Shangri La. It was indeed a peaceful and enlightened place that welcomed and made peace with visiting Jesuit missionaries in the 1600's... until the kingdom was invaded and burned to the ground by a rival Buddhist Tibetan group that was angry at them for tolerating Christians.
 * The Fundamentalist Latter-Day Saints compounds.
 * The policy of Isolationism is similar to this on a national scale.
 * North Korea's isolation qualifies it as a Hidden Elf Country.
 * Japan under the Tokugawa Shogunate was within spitting distance of this trope.
 * And thus the trope swallows its own tail as the elf village trope, so common in Japanese videogames, is likely inspired loosely by history.
 * For much of the nineteenth century, the United States practiced a policy of non-interventionism, which turned into full-on isolationism in the period between the two World Wars.
 * Korea, once called the Hermit Kingdom.
 * Both Japan and Korea's internets by means of language barrier. The latter going as far as to save all its text as images, and if that's not possible, routinely block web translation sites like Google.
 * And the rabbit hole goes deeper to a somehow more literal level. Japan's national internets containing a bundle of core websites locked out unless you have access to an active Japanese mobile phone, and Korea's quite literally requiring a national ID AND a specific digit on the ID identifiying you of not just Korean residence but also Korean RACE. Extending to much of the nation's private websites on account of them being published via a corporate web-hub duopoly subscribing to the authentication ideals. Geeeeeeez.
 * Muscovite Russia under the first Romanovs (Michael Feodorovich, Alexis the Serene, Feodor III and Ivan V) is a European example of this. They only made contact with a few neighboring countries like Poland or Sweden, and mostly for disputing territory and little else. Then Peter the Great came and ended the isolation.
 * While it's started to open up somewhat in recent years, Bhutan still counts even today. Unlike other such modern-day countries, it actually maintains its status of a Kingdom!
 * The Hawaiian island Ni'ihau, also known as "The Forbidden Isle".
 * There are several tribes in the Amazon Basin who have chosen to disappear, retreating into the rain forest's deep interior rather than maintain contact with the rest of the world. They know all about modern civilization, and want nothing to do with it.