"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

A cemetery in Barcelona's Poblenou district is home to this touching funerary statue, which depicts death in the form of a winged skeleton.

This cemetery features modernist statues as strange as its name.

This natural monument has an origin story steeped in legend.

A hidden stream deep in the mountains creates one of the largest tufa waterfalls in Serbia.

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

This tangled English forest looks like something right out of a fairytale.

A relic of the Cold War tucked away in the forested hills above Bratislava.

A perfectly preserved hill village where the buildings are painted like white lace.

An otherworldly alpine pasture with its own unique microculture that recalls Middle Earth.

A miniature train-ride through Slovenia's largest cave system.

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

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

An eerie, derelict amusement park in Berlin.

The post-apocalyptic remnants of a bucolic town ruined by a plane crash.

A total of 22 tiny bridges cross this canal of the Yvette River, forming a unique trail.

Old vessels have been transformed into artistic canvases in this unusual cemetery.

A neighborhood church's unusual abstract stained glass was the final project of avant-garde artist Jean Cocteau.

Tens of thousands of ancient rock carvings hidden in the heart of a French national park.

The birthplace of the ferocious William the Conqueror, this castle is awash in medieval history.

Miles of man-made caves and tunnels are currently used for cultivating mushrooms.

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.