A surreal museum of extraordinary industrial objects.

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

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

The most visited, and possibly most controversial, museum in Germany.

Fall down the rabbit hole into a surreal journey of human consciousness "from ass to soul."

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

An eerie, derelict amusement park in Berlin.

A scale model of Russia so big visitors are offered binoculars to rent so they can see the whole thing.

Palace where the nearly un-killable Rasputin was murdered.

"There's nothing there," and other lies the KGB told us.

This stoic bronze soldier stands as a symbol of Russian sacrifice or Soviet oppression, or maybe both.

This dizzying tower was built to better broadcast the 1980 Moscow Olympics.

The secret cells in the basement of the KGB's Estonian "Grey House" have been preserved as a grim Cold War museum.