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

Explore the complex ecology of this multifaceted nature preserve by riverboat.

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

Where the lovelorn find a home for their sentimental keepsakes.

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

Europe's second largest ossuary wasn't discovered until 2001.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

The house that took a plunge into the facade of a museum.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

Hungarian self-built castle.

Museum dedicated to the terror regimes of Hungary.

A 19th century artistocrat's mansion, turned into a library, hidden in a modern library.

A museum in the childhood house of a medical pioneer.

Once the home of a hermetic monk, this cave now houses a small church.

The legendary statue-hating superintendent of Golden Gate Park is honored with... a statue.

A rococo retro-futurist future-rustic vernacular between yesterday’s tomorrow and the future that never was.

A submerged village appears when dam levels drop.

"Alleys of Stone" form natural mazes in Spanish natural park.

Commonly acknowledged as the only public monument to the Devil himself.

Cliffside houses provide a spectacular view from their perch above the valley.