The Andean town where every single building is decorated with a brightly colored frieze.

A little known Colombian theme park of giant curiosities.

This ancient monastery complex was transformed from an island to a peninsula when the lake was partially drained.

A memorial to a giant seabird that was hunted to extinction.

Romans built the world's tallest artificial waterfall in 271 BC.

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

A vintage video game wonderland in downtown Reykjavik.

Every year, the town of Menton, France, turns lemons and oranges into giant sculptures depicting windmills, dragons, and more.

This incredible college library is a visual masterpiece of mosaic art. It also looks kind of like a giant boombox.

At this Oaxaca contest, artists turn purple produce into stunning depictions of saints, buildings, and La Pietà.

An abandoned railroad tunnel is now filled with bioluminescent bugs.

A chance to sleep among the firs and pines of the Oregon forest.

The Rio Lerma (Chignahuapan) in El Salto, Mexico, is one of the most polluted rivers in the world. It’s covered in white foam, and falling in can kill.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

A medieval military street hidden beneath a charming French fishing village.

The massive machine creates cracking displays of indoor lightning.

Colorful concentric circles honor a small Croatian town's supposed spot at the nucleus of it all.

Iceland's only steampunk shop imagines a retro-futuristic world that never was.

A bike train runs along a disused railway line through the tranquil French countryside.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Massive mounds of golden sand look like a desert landscape randomly plopped in an Arctic forest.

A fantastical and futuristic temple of light built from nine monumental glass veils.

The roadway bend where highway painters practice their craft looks like expressionist art.

Woven tree art gives this towering Australian woodland a touch of mystical whimsy.