Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

Countless grotesque faces stare out from this eerie Prague art wall.

This vertical pinnacle in China was the inspiration for the floating mountains in the movie “Avatar.”

Perched on a spindly rock spire in a Greek archipelago, this lighthouse would make a perfect wizard's tower.

Morocco's Argania trees are infested with nut-hungry goats.

One of the largest sculpture collections in the U.K. features history's greats, from Bob Dylan to Galileo, in bronze.

This massive blockhead sculpture hides an entire library.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

An enormous, 30-story-deep hole in the middle of Guatemala City.

This huge pile of volcanic boulders hides a stunning network of secret grottoes.

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

This lake in the Cascades lives up to its name, disappearing down a hole every spring.

A rocky sea serpent hides caves, blowholes, and a spectacular natural bridge.

"I did this all while you were watching TV."

The world's first ice hotel is still one of the most elaborate and beautiful.

Traditional 15th century Chinese garden in the middle of Vancouver.

Stunning examples of Russia's 18th-century wooden architecture.

An ancient stone fortress considered by many to be the eighth wonder of the world.

The stately remains of Llywelyn the Great's mighty fortress.

Two rocks in a perpetual kiss and one of "the most romantic spot in America."

A Prada store in the West Texas desert that is never open for business.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

This "floating railway" is one of the world's oldest monorail systems.