The achievements of ancient cultures tend to be woefully unappreciated -- we think of the people as loincloth-wearing savages, and when we're proven wrong by some impressive feat of engineering, we just make a bunch of documentaries about aliens. But the engineers of times past were nothing to sneer at, and some of their accomplishments make ours seem slightly embarrassing. Bjorn Christian Torrissen Derinkuyu's underground city was discovered in the 1960s in Turkey, when a modern house above ground was being renovated. Much to the relief of everyone present, the 18-story underground city was abandoned and not swarming with mole people. Master Tourism "Do you want to flood it again, just to be sure?" 5 Shockingly Advanced Ancient Buildings That Shouldn't Exist
Facts - interesting, provocative, well-seasoned
Key: The essential Olympians ' names are given in bold font . Key: The names marked in green are that of the 12 original Titans . Notes ^ a b Conflicting origins.