At Untapped Cities, with our mantra “Rediscover your city,” we have long espoused the idea that you can be a tourist in your own city. In partnership with, we’ve put together a guide to the fun facts about Brooklyn landmarks that even many New Yorkers do not know. If you want to surprise your friends, impress visitors, and drum up your NYC-street cred, this is your indispensable guide.

1. A Fake Brownstone in Brooklyn Heights Hides a Subway Ventilator

Brooklyn Heights was the first landmarked historic district in New York City. The beautiful brownstone-dominated neighborhood has both a Revolutionary War past and modern secrets hidden in plain sight. Our favorite is the townhouse at 58 Joralemon Street which isn’t a house at all, but a subway ventilator. The blacked out windows and uninviting front door give clues, but otherwise everything seems normal.

Discover more secrets about Brooklyn Heights.

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