Seven Wonders of the Industrial World/Tear Jerker

Tear Jerkers in  include:


 * "The Sewer King" when Bazalgette spends weeks drawing up his plans for the London Sewers to the point of damaging his own health only for them to be rejected mostly due to political infighting amongst the committe in charge. It's just the look on the actors face while we cut to his wife talking about how gutted he is. In fact, there were quite a few tear jerkers in that series - surprisingly many for a show about engineering!
 * The same episode, at the end, features a short, home-movie style clip of Dr. John Snow in his study, working. He looks up into the camera and smiles, modest and slightly shy... and then we learn that he died five years before Bazelgette's sewers were completed and his theories about the cause of the cholera epidemic (that it was spread in the water, not through the air) were finally validated.