More than 350 million years ago, western New York was covered in a vast sea. Today, you can dig up the remains of the plants and animals that lived there.

A no-frills cinephile haven known for showing offbeat, underseen films.

This small, hidden cove is home to abandoned boats.

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

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

A whimsical, but often overlooked clock in Park Avenue.

This small and serene place for quiet reflection on Staten Island was built in China based on the gardens of the Ming Dynasty.

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

Unrepaired walls from a 1920 anarchist bomb attack.

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

Thriving meadows span a rooftop in one of Brooklyn's most heavily industrialized neighborhoods.

Cryptic messages embedded in the New York City sidewalk.

A historic 1890s architectural masterpiece with an iconic clock tower that, once open to the public, now faces an uncertain future.

Historical figures from New York City's Catholic community reside in Midtown.

The name of this tiny pocket park tucked between two buildings on Manhattan's Upper West Side is Latin for its location: "seventy-one."

Check out the underground party scene at the "Burning Man of Brooklyn."

An annual extravaganza of Broadway theater memorabilia.

Plot your trip through the city on the sidewalk.

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

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

Spinning silently in the lobby of an Art Deco masterwork is a massive vintage model of the Earth.

The oldest living tree in Manhattan comes shrouded in sinister legend.

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

A collection of fanzines, recordings, and documents detailing the rise and influence of the feminist punk movement.