Castle in the Sky

Castles are the place of dreams, being in plain sight but impossible impossible for common folk to actually reach. Sometimes, the castle isn't just symbolically out of reach -- it's physically out of reach, suspended in midair.

The opposite of a Ominous Floating Castle, this represents a place to strive to reach. A Castle in the Sky may appear on a Floating Continent.

Anime and Manga

 * The Trope Namer is from Laputa: Castle in the Sky.
 * Tiphares in Battle Angel Alita might be an example too, as the place that the denizens of the Scrapyard can never quite reach (I'm reading this now, so maybe this doesn't apply?)
 * The castle in Revolutionary Girl Utena, suspended upside-down above the dueling arena, is said to be . But depending on whose interpretation you accept, it's hard to tell if it's physical or symbolic.
 * Yet another half-read example, I'm going to guess that something like this exists in UQ Holder. It certainly does symbolically in the space elevator at the capital.

Literature

 * Castle in the Air presumably has one of these.

Video Games

 * The castle of Queen Zeal in Chrono Trigger tops the Floating Continent of Zeal, a peaceful and enlightened land (or so it seems). That is, unless you're stuck on the Earthbound Island below