A resort destroyed by a mysterious bombing offers visitors only its remains and the riddle behind it's demise.

Blue-green pools and smooth stones comprise one of Spain’s most idyllic hidden wonders.

A French valley with forests so lush it was nicknamed "the Small Amazonia of the Pyrenees."

A breathtaking canyon offers stunning views and frightful pathways through an ecological paradise.

The former 1920s mansion of a prominent Catalan developer was used as the Soviet Embassy during the Spanish Civil War, and there is still a bunker below the garden.

An eerie gravel road full of shards of red bricks leads to the ruins of a deserted factory.

Ancient cave tombs known as the "houses of fairies."

This old, abandoned hotel offers magnificent views.

This huge abandoned fortress hidden inside a mountain holds a world of subterranean secrets.

An abandoned nightclub has become a vibrant work of art.

An abandoned Art Deco hotel nestled on the side of a wooded mountain.

The abandoned medieval theme park was meant to be the "Disneyland of the Philippines."

Cursed swimming pool left abandoned is now a favorite of filmmakers and ghost hunters.

A stately palace has been converted into the world's largest cannabis museum.

A flight of this "ghost staircase" has 40 steps on the way up, but only 39 steps on the way down.

A kitsch shrine dedicated to the ogre-slaying folktale hero born from a peach.

This western-themed amusement park is host to a large number of decaying animatronic cowboys.

Japan's iconic sci-fi hero rendered to 8-bit by notorious French street artist Invader.

Coast along one of Japan’s mountain railways for coveted views of magnificent hydrangeas.

Running through lush forests and across the Tadami River, this train line offers breathtaking views of rural Japan.

If Hello Kitty were Mickey Mouse, this would be Disneyland.

This isolated Japanese mountain village untouched by time showcases unique and stunning traditional architecture.

This traditional Japanese-style house doubles as one of James Turrell's colorful works of art.

Chiseled out of a sandstone cliff, one farmer's unfinished art project lies in ruins.