A surreal museum of extraordinary industrial objects.

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

340-foot statue built to honour the Heroes of the Soviet Union.

Macabre museum devoted to historical Viennese murders.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

A forgotten monument to Yugoslavian freedom.

This stunning, out-of-the-way Croatian monument commemorates a community's uprising against occupying fascist forces.

Unique house covered in a nightmarish mural of demons, ghosts and monsters.

Ride a dragon train into a world of dwarves.

"World machine" built by an untrained Austrian farmer.

Artfully arranged bones of 5,800 Austrians.

An abandoned NSA listening post on Berlin's "Devil's Mountain."