Now overgrown, these anti-tank barriers from World War II are sometimes called "dragon's teeth."

Some believe that the artist behind this whimsical statue inserted his own likeness as a way to discreetly flip the bird.

Statues of a fire-breather, a clown, and a whole performing troupe celebrate Luxembourg's creative side.

The official motto of Luxembourg reminds passersby of the Luxembourgish commitment to their national identity and sovereignty.

A line of abandoned, alien-like fortresses dot the mountains of North Italy.

Slovenia's first mosque is a striking mix of Islamic and modernist architecture.

A whimsical bridge adorned with decorative dragons.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

A public work of art that also provides some relief from the summer heat.

Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.

A small marionette collection located within the dark cellars of an 11th-century Austrian castle.

This strange statue features a bust of the famous composer plopped atop a woman's body.

The world's oldest known salt mine.

This one-time health resort was used by aristocrats around the world.

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

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

Amsterdam's former hotspot for public executions and dissections.

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

The tallest building in the Republic of the Congo is a source of pride despite its towering maintenance costs.

A crypt believed by many Congolese to be a center of black magic.

Soon after its unveiling, this giant inverted globe sparked controversy and was vandalized.

At almost 1,000 years old, this is the oldest known door in all of Britain.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

A friendly pub with a sordid past in cock fighting.