It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

The world's first clock to use set theory as a measure of time required the invention of a new light bulb just to maintain its obtuse measurements.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

Art and a pun, all in one.

A wunderkammer of mysterious objects and stories.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

A surreal museum of extraordinary industrial objects.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

The first permanent memorial to a unique secret weapon of World War II.

The mummified relics of an American missionary.

"Enter and be entertained or annoyed by Dada in Walla Walla."

Feeding hungry Ballard boat workers since 1922.