A psychedelic labyrinth on the San Francisco bay.

An old department store turned Nazi prison turned artist commune.

The 1852 novel "Uncle Tom's Cabin" lends its name to a subway station, a street, and several shops on the edge of Berlin.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

Metro station with a claim to rock n' roll fame.

Cold war icon and onetime "hole" in the iron curtain.

A traditional U-Bahn station in Berlin gets a string of rather untraditional benches.

Berlin's old airport.

Where once there was a train station bathroom, there is now this German burger joint.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

An eerie, derelict amusement park in Berlin.

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

This cemetery features modernist statues as strange as its name.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

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

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

Version of the French Riviera destroyed by the sea.

Oldest building in California still in use.

The ghostly remains of an accidental sea.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

Hike amid the palm trees that thrive among Southern California's Indio Hills.

The so-called "Bridge of Thighs" in Palm Springs allows nudists to discreetly cross the road.