An old tram depot transformed into a vintage car paradise.

The skeletal frame of a decommissioned gas-pumping station offers breathtaking views of greater Berlin.

Known simply as "The Hand," this famous public sculpture in Berlin was featured in a Depeche Mode music video.

A monument to the man who almost killed Hitler.

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

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

Art and a pun, all in one.

The silly symbol for an underground protest group is now scattered around the city.

This sprawling concrete suburb of Kraków was designed by the Soviet Union as the model proletarian city.

A 20th-century picture show in 3-D.

A peculiar family mausoleum built by a German nobleman captivated by the occult.

The world’s narrowest house makes for an awkward, four-foot-wide living space.

Communism's topsy-turvy effect on Poland has been brought to life in this wacky tourist trap.

Warsaw's fantastically preserved gasworks...almost.

The site of the first battle of World War II.

This Nazi ruin was the site where Hitler was almost blown up by a suitcase bomb.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

This grubby wall is said to be one of the Earth's esoteric energy centers.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

Real bones which are said to have belonged to a Polish dragon.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.