Chicago, like a lot of other modern cities, has a hidden secret: It's home to miles of passageways deep underground that allow commuters to get from one place to another without risking nasty weather. Los Angeles, Boston, New York, and Dallas all have their own networks of underground tunnels, as well. But there's a place in Eastern Europe that puts those forgotten passages to shame. Welcome to Derinkuyu — the underground city.
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Written by Reuben Westmaas October 9, 2018
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