The first piece of public art dedicated to LGBT rights.

An extensive collection of fine art devoted to man's best friend.

This speakeasy continues the Prohibition-era legacy of Harlem's jazzy Swing Street.

New York City's only radical feminist independent bookstore.

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

A Manhattan Episcopal church with an eerie underground crypt.

Commemorating the spot where the famous scientist fed his pigeons.

More than 250 sakes are available in an izakaya hidden in the basement of a Midtown office building.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

A crumbling hospital from the 1850s on Roosevelt Island.

This pirate-broadcasting-tower-turned-restaurant played a rebellious role in the history of Dutch television.

The world's oldest Jewish library was founded by Sephardic Jews in 17th century Amsterdam.

A public urinal so pretty, it was declared a national monument.

A sinister pyramid in the Frari contains the heart of the famous neoclassical sculptor.

This factory made "health corsets" that were a step towards liberating women's bodies.

A reliquary of pop culture marvels, including the world's largest (and most terrifying) Jack-in-the-Box.

A collection of haunted artifacts chronicles the career of the world's most famous paranormal investigators.

An easy-to-miss plaque marks the building that first held this 19th-century telephone innovation.

British troops and Prohibition couldn’t stop this spot from becoming one of the United States' oldest continuously-run taverns.

Connecticut sites linked to the only trial to ever use demonic possession as a criminal defense.

New Preston and Kent, Connecticut - where Friday the 13th, Part 2 was filmed.

These Benedictine nuns have been making artisanal cheeses since before it was cool.

Who knew the Devil's domain was a hot spot for tubing?