Turns out, there's more in Brooklyn's secrets bag than just those warehouse parties your cool friend took you to once. We actually found 21 totally awesome ones: everything from hidden rooms inside the Brooklyn Bridge to -- DUDE THERE ARE HIDDEN ROOMS INSIDE THE BROOKLYN BRIDGE.
There are hidden rooms inside the Brooklyn Bridge
Towards the Manhattan side of the bridge, there’s a hidden, Cold War-era bomb shelter, which was only rediscovered in 2006 -- perfectly intact and filled with supplies like medicine, crackers, and blankets. On the Brooklyn side, there exist a vast series of massive, beautiful music venues, ballrooms, and art spaces that once comprised Brooklyn Bridge Anchorage, but which closed after September 11th due to security concerns.