The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

This otherwise unremarkable ski town building marks the site of Butch Cassidy's first robbery.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

With 3,000 bikes on display, the world's largest bicycle museum includes some famous rarities.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

The magic's in the hole!

A Roman-style column in Oregon hides a spiral staircase inside.

The flock of plastic poultry is an ode to the classic comedy staple.

A massive sea stack famous for its appearance in The Goonies.

A giant Troll lurks under one of Seattle's oldest bridges.

A wall of chewing gum moonlights as collective art.

The taxidermied remains of a once-great parrot.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

An unusual ode to the late Irish playwright, complete with a squiggly bust and coffin-shaped bench.

The Tudor-style cottage in the middle of the square is not quite what it seems.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

Scattered throughout London are ancient remnants of the city's former bounding wall.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.

The narrowest street in Paris.