The remains of the last Gonzaga villa, a luxurious palace built in spite of an economic crisis.

This one-time health resort was used by aristocrats around the world.

This sculpture of a rhinoceros suspended above a city square is meant to evoke the weight of the human condition.

A massive work of modern art that appears to be a crop circle in the middle of the desert.

Turntable anonymously received orphans, alms, and groceries.

18th century anatomical amphitheater of the Royal College of Surgery of Barcelona.

For one day every month Barcelona's Estació de França transforms into a market for model trains.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

A once-secret library of Freemason history in Catalonia.

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 the most photographed buildings in a city known for its Modernista architecture is an abandoned squat.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

After a nearly successful attempt on Hitler's life, the conspirators met their fate in the courtyard of this Berlin building.

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

A memorial in the Tiergarten is a reminder of the suffering inflicted on homosexuals by the Nazi regime.

Inside this Jewish cemetery is a memorial to soldiers who deserted the German army and were executed.

A prime example of socialist modernist architecture, wrapped in a enormous fresco about the media.

Largely overlooked, this little fountain on Museum Island is a whimsical tribute to a Prussian king nicknamed the “Fatty Flounder.”

Reminders of the Battle of Berlin still scar the railway.

Named after a militant urban guerilla, this famous former squat is a graffiti-covered stronghold of leftist culture.

Throughout this shopping mall are medieval ruins that were discovered during the mall's construction.

Macabre astrological automaton clock dating to the late 1400s.

A significant example of Czech cubist architecture—a style you won't find anywhere else in the world.

A series of playful yellow penguins share a serious message about the environment.