The "Prussian Versailles" that is as glorious today as when it was built.

A local train station entrance hall doubles as a sanctuary for barn swallows.

The world's first motorway was used as a racetrack until the late 1990s.

Gardens representing parts of Asia, Europe, and the Mid East are tucked away among the Soviet-style buildings in East Berlin.

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

Super-heavy Nazi architectural experiment.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

Dine at a legendary after-hours joint frequented by David Bowie and Iggy Pop.

Concerts, art, offices, and a café in what used to be Berlin's first crematorium.

This cemetery features modernist statues as strange as its name.

A beautiful but toxic fountain of mercury.

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

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

This tower once served as a radar station during the Cold War.

This gaping hole in the middle of a remote mountain lake looks like a portal to another dimension.

Nestled in the mountains of Portugal is a tiny village made almost entirely of schist.

Nicknamed "Karri Knight," this Eucalyptus was planted in 1895 and stands at 72 meters.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

Elaborate tile work in this railway station tells the story of Portugal.

This historic streetcar system has been running since the 19th-century.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

A deer-headed statue that brings together a 12th-century legend and big wave surfing.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This unreal Portuguese palace looks as though it's made from a pile of different castles.