One of the last Jazz Age "Wonder Theaters" in New York City.

A masterpiece of LGBT art has been restored in what may now be the most valuable restroom in America.

Mysterious 500-year-old tapestries depict a unicorn hunt.

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

The only remaining U-boat that is still floating never actually saw any action in World War II.

Constructed by forced laborers, this submarine pen is now a museum and war memorial.

This 165-foot water tower has been supplying the residents of Varel with drinking water for more than a century.

Once the longest swing bridge in Europe.

Böttcherstraße's bells, extolling Nordic virtues and the great conquerors of the world.

A stunning gilt bronze relief denounced by Hitler as "degenerate art"—even though it was dedicated to the Nazi leader.

One of the oldest wine cellars in Germany is now a restaurant beneath Bremen's town hall.

Eight naturally mummified bodies in glass coffins are housed in an underground crypt.

The only microgravity tower in Europe can produce nine seconds of weightlessness.