Hitler's bleak vision of relaxation still stands as a mostly abandoned 10,000-room resort complex.

A palatial sculpture park was built illegally and in secret by a self-taught artist over 36 years.

These Nubian pyramids are strange and unique, even by pyramid standards.

While most of the games in this arcade take quarters, that would have been a small fortune when they were made.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

A 1:20 scale piece of the Netherlands commissioned by a queen lets visitors take a stroll as giants.

A towering work of stone and philosophy that was constructed using ancient Hindu science.

This legendary city has been a tourist attraction for centuries.

Once featuring over 60 miniature replicas of famous Chinese locations, the Splendid China theme park was completely abandoned and is now mostly rubble.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

Enter the cabin of a life-sized Hindenburg replica.

A mechanized clock where a man fights off a dragon, crab, and rooster.

A place of great reverence for Trekkies everywhere, a hero's future birthplace.

The only surviving prototype of Buckminster Fuller's revolutionary car.

The hallucinogenic center of the ancient world.

Giant marble phalluses on the sacred island of antiquity.

The "lovely red Vega" of the legendary record-settling pilot.

A 14th century bridge built as a fortress, where the devil lurks on one of its towers.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

Ozymandias’ time-keeping temple.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A quarter-scale locomotive wonderland built by one man and his family.