One of the deadliest American air disasters is nearly forgotten in Brooklyn.

Lehigh Valley barge No. 79 still gets tugged along - but now it houses a museum and unusual performances.

The flagship building of an early national restaurant chain is a superb example of terra cotta art.

The only surviving sidewalk clock in Brooklyn.

New York's southernmost subway station is whimsically wavy.

This preserved wilderness hides the remains of a colonial grain mill used to feed George Washington's troops.

A mysterious, abandoned building rotting on the Brooklyn waterfront.

This recipe is set in stone.

An abandoned subway tunnel that could have reinvigorated Staten Island still lies somewhere beneath this Brooklyn park.

Every animal in the torah taxidermied and crammed into a Brooklyn townhouse.

Waterway populated with abandoned projects, including a submarine.

A massive forgotten storehouse from 1913 on the Brooklyn Waterfront has a spectacular view of Brooklyn.

This small, hidden cove is home to abandoned boats.

In the middle of downtown Brooklyn lies a 165 year old secret hidden right below the surface (closed to the public indefinitely).

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

This abandoned subway station can still be seen on regular commuter trips.

There’s a secret bunker inside the Brooklyn Bridge, but the city won’t say where.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

A crumbling hospital from the 1850s on Roosevelt Island.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.