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

Home to 10,000 medical specimens including the remains of Rudolf Virchow's extensive collection of pathological specimens.

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

Twice a year, visitors can tour the desolate site that birthed the Atomic Age.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

A large instrument played by the wind.

The old Niles Canyon Aqueduct in the San Francisco Bay Area is a bemusing and secret trail through nature for wayward travelers.

Successful artist residence program has filled this ranch with dozens of sculptures over the years.

It's not your typical library, memorial, or book store.

Home to the "Circus" trees created by Axel Erlandson.