Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

The world’s first interactive human body museum also serves as a chair for a giant orange man.

A preposterously luxurious hotel with gold-plated iPads, Rolls Royce chauffeurs, and a staff that trains by watching "Downton Abbey."

A giant gorilla made of used car tires used to sit sentinel over a Helsinki college campus.

An imperial fortress city that incorporated cultural elements from the entire Mughal empire, only to be abandoned the year it was finished.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

Largest Kauri tree in New Zealand.

A mysterious structure left behind on the Polish mountainside, sometimes called "Hitler's Stonehenge".

A naturally beautiful, seemingly bottomless deep blue spring.

This ominous Albanian fortress houses tanks and downed planes as a reminder of their victories over Western imperialism.

Gigantic water vessel, permanently grounded in Southern Albania.

Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

What happens when you cross a mayor and a painter?

Villas that once served as playgrounds for the rich now fall away in decay.

Finnish lake, and scene of an infamous murder mystery.

An abstract monument to a symphonic composer.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

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

This endearingly discomfited urinating statue commemorates the sneaky pees had by us all.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

Open-air museum with a large collection of Soviet-era statues.

Ruins of a late 1950s Polish ski jump ramp in the middle of the city.