The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

This beautiful natural train tunnel is said to grant the wishes of visiting lovebirds.

An enormous, inside-out glass globe built in 1935.

The first declared National Monument in the United States.

A battle between nature and architecture in the Cambodian jungle.

A serpentine highway twists and turns over the treacherous Norwegian Sea.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

Medicinal spa created with the discharge from a geothermal energy plant.

An eerie, derelict amusement park in Berlin.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

Northern Ireland's Brobdingnagian stepping stones.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

This Hungarian stilt village is built in a lake that never freezes over due to the power plant that that uses it as a cooling pond.

A classic gold rush hotel can be expected to pick up some ghosts along the way, and the Golden North is no exception.

Thanks to both terrific preservation and historic vandalism this ancient site is known as the "Heart of Neolithic Orkney."

Vietnam's feral abandoned water park offers access to a post-apocalyptic funscape, now with fewer crocodiles.

This conical hill was built as a testing ground for an engineer known as the Glider King.

2300-year-old Roman road connecting the empire.

The burning of this 12th-century church kicked off a campaign of Norwegian Black Metal terror.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.