Countless stories attempt to explain Poland's mysterious J-shaped trees.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

The world's most delightful not-NOT-religion welcomes visitors to the town of Templin, just like its more stoic peers.

A university observatory dome painted to resemble the beloved 'Star Wars' droid.

It's good luck to be mocked by this monkey.

The many—66 to be exact—faces of the German forest.

The vibrant buildings in the “capital of the comic strip” celebrate the art form that made it famous.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

The video game-themed street art first popped up in the French city.

Balconies that have a most unusual accent.

This crack in France's seaside cliffs once hid a sinister secret.

Visitors dating back to the 1600s carved their marks in the stones of the iconic tower.

The Nobel-Prize-winning author of The Stranger is buried beneath a simple gravestone in a sleepy French village.

A beautiful Victorian statue shows France's enduring love of the rhinoceros.

This Corsican Neolithic site is full of pre-Roman megalithic structures that may or may not be penises.

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

A small town hallucinates en masse - Bad bread, or CIA science project?

A mud statue stands in the dark tunnels, seeming to hold up the weight of the city above.

Artist Danielle Jacqui decorates nearly every inch of her home inside and out with her work.

This 14th century wine cellar is home to the oldest barrel-stored wine in the world.

One man's desire to transcend art led to the construction of this outsider chapel.

To the famous surrealist artist, liberty required two torches held high.

Green labyrinth formed by a karstic maze hidden in a preserved oak forest.

An enchanting work of outsider art, full of whimsical sculptures and carvings.