This lake-bound geographical marker sits at the point where three European countries intersect.

The world's northernmost aquarium looks like it has fallen over.

A museum of alchemy and a basement laboratory all housed in an ancient building in a Gothic tower.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

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

Macabre astrological automaton clock dating to the late 1400s.

One part local history, 99 parts gruesome haunted house.

An unusual round church in London with a Templar past.

World's strongest whirlpool.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

A museum within a museum, devoted to history's most questionable medical devices.

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

20,000 pieces in a Frank Gehry-designed building.

17,400 lbs., 12 feet in diameter, and 29 years in the making.

14th century Norse artifacts in Northwestern Minnesota could have proved a Viking landing before Columbus.

Copenhagen's celebrated theme park and gardens.

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

Across the Pacific in a raft, a museum dedicated to Thor Heyerdahl's now legendary expedition.

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

Home to three historic ships from the age of Vikings.