A World War II-era submarine is stuck in the mud in New Jersey.

A little lighthouse in New York City, surrounded by mysterious stories of insanity-driven construction.

Beautiful mosaics cover the first stations opened on New York City's newest subway line.

A sculptural commentary on capitalism pokes up from the East River.

Empty, but not abandoned, this cavernous Brooklyn loading dock was once considered the largest individual building in the world.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

There must be a pun in this haystack somewhere...

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

Salute the leader of the proletariat.

An annual extravaganza of Broadway theater memorabilia.

Little Red Lighthouse under the George Washington Bridge.

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.

Commemorating the spot where the famous scientist fed his pigeons.

Once America's longest-manned military fort, now an abandoned hulk.

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.

An artist's cute bronze subway sculptures belie his violent artistic past.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

A popular European tradition makes its way to the states on one of America's most famous bridges.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

Ride the subways of yesteryear.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A semi-scholarly approach to sex.