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10 underground tours full of history and mystery

April 25, 2013, 4:21 p.m.
Eisriesenwelt, Austria, ice cave

Photo: eisriesenwelt.at

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Go deep

Underground attractions boast a sense of intrigue unlike almost anything you're likely to see at street level. Many of these sites feature relics of the past, from speakeasy couches to stacks of human skulls.

Want to enjoy the eerie vibe that comes from the world's most interesting underground attractions? Check out our favorites, including those in Rome, London, Austria (pictured here) and even Seattle. (Text: Josh Lew)