Mysterious 500-year-old tapestries depict a unicorn hunt.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

This edgy museum will whet your appetite for the industrial history of Western New York.

A king's bloodstained shirt is among the gruesome collection of artifacts displayed below Stockholm's Royal Palace.

A hands-on traveling collection of the innovative devices of yesteryear.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

Possible relics of the ancient Roman city are hidden in this restaurant's façade.

A hip bar decorated with walls of golden skulls.

This historic Canadian jail was once the longest operating prison in the country and is now open for people to incarcerate themselves.

A small museum in this border city displays the contraband art that has been stolen back from smugglers.

This narrow shop in the East Village hosts a matchmaking service for the new millennium.

A DIY art gallery/music venue/lecture hall dedicated to video game culture.

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

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

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

The surviving remnants of a destroyed medieval church now stand in a public park.

A dilapidated dock tells the story of Titanic's missed arrival.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

Volunteer-run library dedicated to exploring five decades of activism history.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.