Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

A floating cat sanctuary on an Amsterdam canal.

A perfectly preserved hill village where the buildings are painted like white lace.

Love is in the air along the small street in Brooklyn.

Eyam took steps to quarantine themselves and keep the plague from spreading.

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

This spectacular track has run continuously since 1882.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

The hidden lair of an alchemist rediscovered in a 2002 flood.

Twenty-three trees, each paired with a basalt stone, line a street in Chelsea, continuing an urban project started by German Fluxus artist Joseph Beuys.

The greatest real estate coup of all time.

This translucent sculpture represents a quintessential component of New York City's skyline.

This lavish room at NYC's French Embassy is a rare relic from the end of the Gilded Age.

The origins of midtown Manhattan's anachronistic wooden farmhouse remain a mystery.

Revolutionary War casualties fill the only 17th century structure remaining in Manhattan.

The best place in New York to pick up the controversial, notoriously foul-smelling Asian "king of fruits."

This Dutch Colonial home is the oldest remaining farmhouse in Manhattan.

A posh members-only club with a literally dramatic history.

NYC's legendary underground network for bovine transportation.

In its day this historic fort held 100 cannons pointed in almost every direction to protect New York.

An odd, ancient window that may have once been part of a brutal prison is embedded in the side of New York's Police Plaza.

A former insane asylum despised by Nelly Bly and Charles Dickens is now fashionable apartments.