Eastern Bloc nostalgia, anybody?

"Unity, Creativity, Beauty."

A flamboyant five-story building in Bulgaria resembles a crawling snail.

The heads of two giant mythological water horses honor Scotland's horselord past.

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

An architectural marvel that spans the Arda River, and has stories of a haunted past.

Overlooking a Scottish loch, this beautifully crumbling castle once inspired a poem by William Wordsworth.

The world's largest wooden structure.

The final resting place of the great navigator, or maybe his brother.

Ham is serious business at the Prosciutto Museum-Serious, delicious business.

Filled with goldfish swimming in a shallow pool of sea water, this ancient crypt is more wishing well than burial site.

This zoological museum began as the first great curiosity cabinet.

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.

This series of rope-style bridges brings visitors into a jungle layer that is usually reserved for birds and monkeys.

A Netherlands hotel where you can sleep inside a wine barrel.

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

Rock carving created 1,300 years ago 75 feet off the ground.

Mysterious standing stone formations looks like a petrified forest.

This legendary city has been a tourist attraction for centuries.

An elaborate Mayan city shrouded in alien conspiracy revealed the tomb of Pacal the Great.

Every equinox this Maya pyramid puts on a spooky ancient light show.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

The remains of what was, not so long ago, the world's largest city.

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