A modern zoetrope on the New York City subway.

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

Rummage through this sunken ship, but leave your scuba gear at home.

A Manhattan Episcopal church with an eerie underground crypt.

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

Walk into the 19th century without leaving Brooklyn.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

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

Unrepaired walls from a 1920 anarchist bomb attack.

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

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

America's greatest forgotten garden and the former stomping grounds of Son of Sam.

A discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

An oasis of calm amid the chaos of the boardwalk, the museum traces the heritage of this beloved beachside amusement park.

Reclaimed by nature, the ruins of Doodletown, New York are remnants of a town consumed by a state park.

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

Cryptic messages embedded in the New York City sidewalk.

Avoid gangster interaction while window-shopping.

Visit the monolithic tomb of America's most famous general.

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

Plot your trip through the city on the sidewalk.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

Hordes of precariously balanced stone figures crowd the shores of the Hudson River.