Swedish skyscraper with a 90° twist.

The ancient heart of Tunis is an enormous maze of narrow streets and alleyways.

This museum in the famously blue neighborhood of Sidi Bou Saïd showcases a traditional Tunisian lifestyle.

This German version of Universal Studios holds a vault of treasures from the NeverEnding Story.

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

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

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

From open waters to open dance floors—this decommissioned ferry has been transformed into a lively nightclub.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

Arguably Belgrade's only example of pure Art Deco architecture.

A pair of connected skyscrapers form this symbolic gateway.

An underground city of salt.

Inside this Krakow church, an explosion of psychedelic color.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

This riverside restaurant has been serving customers since 1146.

A whimsical art tower at a Bavarian brewery includes a grotto for its mythical beer-brewing dwarves.

The largest brick bridge in the world.

Named after the German word for "a longingness to travel," this park brings together thousands of city and street signs from around the world.

Money made from smuggling sugar helped create this wondrous rock maze in honor of the Prussian Queen Louise.

Skeletons dressed in extravagant 18th century royal costumes cavort in the aisles of this German basilica.

A man-made slag heap that you can "ski" down, and is home to the world sandboarding championships.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

An ornate sculpture of an ox in repose marks the former entrance to Nuremberg's medieval meat market, which was destroyed during World War II.

This strange sculpture depicts a giant nightmare hare crushing a man to death beneath its colossal bulk.