The hallucinogenic center of the ancient world.

This open air archeological site houses almost as much wildlife as it does classical religious artifacts.

Monasteries on rock pillars, once accessible only by frayed ropes.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

This massive subterranean fissure is known as the "underground Grand Canyon."

Bizarrely-painted church designed by a controversial artist.

A miniature train-ride through Slovenia's largest cave system.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

The "dragon babies" of southeastern Europe.

This one-time health resort was used by aristocrats around the world.

This scale model of our solar system hid in plain sight for years before a physics team sought out all the planets.

A whimsical bridge adorned with decorative dragons.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

Two stunning 17th-century libraries and a cabinet of curiosities.

Macabre astrological automaton clock dating to the late 1400s.

Monument to a suicide protesting the Soviet invasion.

This 1000 year old relic-filled cave monastery and UNESCO World Heritage Site also hosts an amazing micro-miniature museum.

340-foot statue built to honour the Heroes of the Soviet Union.

Housing the famous Norwegian ice-defying 19th century polar exploration ship.

Home to three historic ships from the age of Vikings.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

Copenhagen's celebrated theme park and gardens.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.