An interactive exhibition space dedicated to the kinetic sculptures of Swiss artist Jean Tinguely.

This artistic fountain display pays homage to this area's theatrical history.

The shape of this old salt factory complex was inspired by the course of the Sun.

This memorial museum chronicles the apocalyptic destruction of the First World War.

Nicolas Schöffer's massive interactive sculpture was assembled in 1961 and brought back online in 2016.

This former limestone quarry is now a subterranean wonderland of grand stonework.

Five candy-colored villages on the Italian Riviera.

A former ironworks that was the first UNESCO industrial site.

Unchanged for centuries, this medieval library keeps its books in chains.

An old department store turned Nazi prison turned artist commune.

A socialist building dedicated to teachers showcases one of the largest Soviet mosaics in the world.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

This small Slovenian town has become a magnet for microbreweries.

An otherworldly alpine pasture with its own unique microculture that recalls Middle Earth.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

This castle has links to Portugal’s founding and struggles for independence.

Giant topiary dog once played a role in a terrorist bomb plot.

This massive subterranean fissure is known as the "underground Grand Canyon."

The original "capsule building" is a masterpiece of Metabolist architecture.

A Japanese corporation has turned this small island town into living modern art gallery.

The remains of what was, not so long ago, the world's largest city.

Feed it cash, get your very own gold bar.

The deadliest diving spot in the world is also a stunning geological marvel.

The medieval center of the Islamic world was also once the seat of Saladin's sultanate.