Some amazing photos of the storm sewer system in Tokyo. (Further reading)
posted by dersins on Sep 4, 2007 - 26 comments

Derinkuyu wasn't discovered until 1965, when a resident cleaning the back wall of his cave house broke through a wall and discovered behind it a room that he'd never seen, which led to still another, and another. Eventually, spelunking archeologists found a maze of connecting chambers that descended at least 18 stories and 280 feet beneath the surface, ample enough to hold 30,000 people. [flickr]. [wiki].
posted by dersins on Aug 31, 2007 - 48 comments

Wieliczka Salt Mine in Poland has been in operation for 800-odd years. Needless to say, this has given the miners plenty of time to carve some pretty amazing things. More photos here and here. Videos here and here. Virtual tour here. Wikipedia.
posted by dersins on Aug 16, 2007 - 36 comments

Welcome to Cold War City It covers 240 acres and has 60 miles of roads and its own railway station. It even includes a pub called the Rose and Crown. Oh, and it's underground. And for sale. Much more interesting than the article, though, are these photo galleries.
posted by dersins on Oct 31, 2005 - 18 comments