A hand-built folk art installation covered with messages of God's love.

From economic backbone of a community to deadly diving hole, these former stone quarries are now a park for rock climbers and graffiti artists.

This huge, disused viaduct is now a crumbling concrete underworld of covered in years of graffiti.

A wall of chewing gum moonlights as collective art.

This small Estonian hill is covered in hand-made twig crosses that are said to bring good luck.

This modern monument to pagan belief looks like it was transported straight from ancient times.

Visitors dip into a variety of pools of what was once ice.

On the Oregon coast there is a natural hole that seems to be draining the sea.

Founded as a refugee camp, now a popular tourist spot.

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.

This blowhole is supposedly caused by a trapped monster.

A prehistoric landscape hidden in the cliffs of Maha'ulepu.

Race through the maze, get your name on the sign.

A Hawaiian stairway to heaven—that you can't climb.

A collection of haunted artifacts chronicles the career of the world's most famous paranormal investigators.

A beautiful, dense forest in the shadow of Mount Fuji, with a tragic reputation.

The world's second-largest excavated hole.

Once the most densely populated place in the world, this island is now a ghost town.

A seemingly endless landscape of pure salt stretches far across Bolivia.

A swing to dangle you off the very edge.

World's largest cave was only discovered in 1991, and now offers tours to the public.

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

The vast, legendary catacombs hold secrets much stranger than stacked bones.