A market for witches is hidden within a train station.

The final resting place of one of the most influential modern occultists.

The colonial city's social history is reflected in its fanciful door knockers.

A little known Colombian theme park of giant curiosities.

Cathedral carved out of salt, located a mile below the earth's surface.

A self-taught astronomer fell in love with the stars and built his own observatory in Colombia.

A narrow ghost town built onto a peninsula behind a Colombian Slum.

Largest pre-Lent festival in the Dominican Republic.

This trio of Dominican cave lakes comprise a colorful biosphere of natural life.

The UFO capital of Australia is the outback’s answer to Roswell.

Finding the exact middle of a giant land mass is hard to determine, but this spot managed to do the trick.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

Architectureal fantasy quarter of Rome.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Six times a day a train runs right through the middle of this Thai street market, sending vendors scrambling.

An explosion of natural color known as "the river that ran away from paradise."

A limestone wonderland of water and subterranean secrets.

Stunning wetlands ablaze with pink lotus flowers.

A gruesome memorial for those lost in this area during the Khmer Rouge genocide.

Dedicated to improving the plight of the rare scaly anteater.

Have fun at the world's first Buddhist waterslide park.

A nightmare for the claustrophobic lies hidden in Southeast Asia.

Enigmatic bug-like sculptures mystify drivers along a Swedish highway.

Sweden's first nuclear reactor, R1, can be visited 25 meters underground.