Abandoned waterpark turned counter-culture mecca.

An architect transformed this abandoned cement factory into his castle-like workshop.

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.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

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

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

A slice of central Asia in the middle of Berlin.

A surreal museum of extraordinary industrial objects.

A quaint Russian village in the middle of a German metropolis.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

Started as a kitchen garden, now the second largest botanical garden in the world.

An eerie, derelict amusement park in Berlin.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

An abandoned swimming pool decays on the outskirts of Berlin.

When German-Iraqi relations broke down, this embassy was vacated post haste.

A wunderkammer of mysterious objects and stories.

A towering monument to war, located on a beautifully peaceful hill.

The abandoned remains of this Victorian brewery hide crumbling bowling alleys and rusting industrial gear.

From toys to kettles to scientific instruments, this German museum celebrates the beauty of 20th century design.

Berliners converted a bombed-out, disused lot into a community-run urban farm with its own cafe and bar.

A museum in the building where Nazi Germany signed its surrender tells the story of World War II from the Soviet perspective.

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