The highest point in Belgium is a staircase to nowhere.

A jungle cave in Peru of unknown depths, otherworldly sounds, and strange nocturnal birds that navigate by echolocation.

Only museum in the world devoted to bookbinding and book arts holds a permanent collection representing five centuries.

Abandoned since 1998, this train station has become an oasis for urban explorers.

This gaping hole in the middle of a remote mountain lake looks like a portal to another dimension.

A submerged village appears when dam levels drop.

The world's oldest bookshop still in operation.

This small chapel is built of human bones and decorated with a golden skeleton.

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

A decommissioned submarine base makes a great space for graffiti art.

This disappearing geyser has been attributed to witchcraft, but really it's all about rainfall.

Mysterious craters may have been home to an ancient cult.

The ruins of an Estonian prison are drowning in the quarry lake where the convicts were once forced to work.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

A colorful Peruvian city of the dead.

Extraordinary rock formations in open Peruvian fields.

The world's fifth tallest waterfall is a spectacular silver chute of water that cuts through the cloud forest in northern Peru.

With nearly double the depth of the Grand Canyon, this Peruvian canyon is one of the deepest in the world.

This Peruvian canyon is filled with geometric salt pools that have been being harvested since the Incan empire.

The Uros people live on floating reed islands in lake Titicaca.

One of the world's tallest waterfalls wasn't revealed to the world at large until 2006.

A market for witches is hidden within a train station.

This scalding hot river was thought to be a myth until one geoscientist made it his quest to study the mystical waters.