A striking 12th-century-style castle built on the edge of a cliff.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

Ruins of a German castle on top of a towering stone pillar.

The prototype for all Nazi concentration camps.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

This magnificent museum claims to house the cranium of a disciple and the skull of a pope.

Go surfing on this urban wave, "hacked" by local surfers.

A fearsome dragon clings to a corner of Munich's city hall.

The patron saint of spinsters grasps a container of dried blood.

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

The footprint of a frustrated devil in Munich's Cathedral.

This tribute to the 16th-century composer is now an unusual shrine to Michael Jackson.

A star fort along the C&O Canal in western Maryland that protected America in three wars.

Home to items never before seen by the public.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

A priceless collection of the Nation's cryptologic history.

This structure among the trees was the result of divine inspiration.

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

Macabre astrological automaton clock dating to the late 1400s.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.