A perfectly preserved abandoned criminal asylum in South Australia.

The site of the notorious Great Train Robbery of £2.6 million, one of the biggest heists in English history.

This series of Scottish caves has no clear purpose other than baffling historians.

The healing properties of this well attracted royals and commoners throughout the Middle Ages.

A tiny chapel clings to a precipice above Germany’s gemstone capital.

The small cliffside monastery known as the Tiger's Nest is said to be the meditation site of an 8th-century Buddhist master.

This centuries-old Italian chapel hangs midway down a sheer cliffside.

A castle perched precariously over the Crimean Sea.

An otherworldly restaurant perched on the edge of a jagged cliff next to a medieval holy city.

The hermits of Karoulia protect their asocial lifestyles by living on the vertical face of a treacherous precipice.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

This giant boulder is sandwiched between apartment complexes in upper Manhattan.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

The platform atop this verdant volcano was built with the help of a royal elephant.

Rainbow-hued in the summer and crystalline in the winter, this salty lake has inspired battles, temples, and plenty of awe.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

This legendary urban waterfall creates a dazzling display of rainbows.

Also known as Rye Castle, this 13th-century fortification later became a prison and held one of Rye's most famous criminals.

This 2,700-year-old woman is the jewel of the Maidstone Museum's Egyptian collection.

Horsemen once used this tilting post during jousting practice.

This medieval church is the only one in the world that features all Marc Chagall stained-glass windows.

Eastern Bloc nostalgia, anybody?

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

The storied English village that pretended to be insane inspired NYC's nickname and the fictional namesake in the DC Comics universe.