The medieval institution is home to the precious treasure stolen in World War II in one of the greatest art thefts of the 20th century.

Constantly maintained, this organ is playing a six-century long composition by John Cage.

On the highest peak in the Harz Mountains, science and the occult faced off in a failed attempt to turn a goat into a boy.

This handsomely carved wooden church is more than 800 years old.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

This towering church is home to a world-famous organ and a treasure trove of medieval art.

A 'living museum' in Leiden, the oldest of its kind in the Netherlands.

A former plague hospital turned medical museum.

The "Prussian Versailles" that is as glorious today as when it was built.

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

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

The architect of this fanciful complex called it an "oasis for humanity and nature in a sea of rational houses."

The colorful, smiling concrete silos of Vancouver.

Come for the flowers, stay for the bats!

Alien rock formations grown from the sands of an Australian national park.

A beautiful hike through national parks, forests and beaches in Western Australia.

This bazaar is one of the oldest in the Arabian world.

Model Trains and Much More in Hamburg.

Northern Ireland's Brobdingnagian stepping stones.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.