This incredible stone temple is a monument to death, victory, and fantasy architecture.

Climb inside an iron crystal magnified 165 billion times its normal size.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

A beer pipeline runs beneath Bruges.

This fascinating museum in an old water tower holds the world's largest collection of Vodou artifacts from western and central Africa.

This old wooden funicular railway leads to a cemetery in the forest.

This giant, 83-year-old ship elevator is an engineering feat to behold.

It's always summer at the beach inside this former airship hangar.

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

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

A tree-like building perches on its trunk in the Steglitz neighborhood of Berlin.

See 150 million-year-old dinosaur tracks and bones dating back to the Jurassic period.

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

The giant metal fruit was once the symbol of a large farm.

The smaller of the three towers of San Marino is a former prison inaccessible from the ground level.

High in the clouds of San Marino sits an ancient tower with some curious prisoner graffiti.

Architectural monsters are devouring this palace's every door and window.

A unique bridge with an equally unique view.

The fairy tale castle of the "fairy-tale king."

Obscured within a ring of trees, this abandoned World War II relic hides on a German hillside.

Terrifying derelict military hospital once housed a recuperating Hitler.

Daily jousts and dancing barrel makers in Munich's mechanical clock.