When you're living in a city whose history dates back to the 1600s, every day is an opportunity to discover another mind-blowing piece of historical trivia. Many of New York City's secrets have been covered up and forgotten for decades. Some strange and surprising finds, however, are hidden in plain sight — a Soho loft filled with nearly 300,000 pounds of dirt, for example — while others are so exclusive that most New Yorkers will never see them. From an abandoned subway station at City Hall to a colonial African burial ground lost for almost 300 years, we've rounded up 15 of the city's most unbelievable, best-kept secrets.
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