Folklore says this medieval fortress was plopped atop a portal to hell to trap the demons below.

An exquisite panometer representing Dresden as it was from 1695 to 1760.

Europe's largest natural bridge has a 19th century royal chateau built into its side.

Created as a "model concentration camp" to hide Nazi atrocities from the international community, this former camp-ghetto now holds a museum and memorial honoring the lives lost within.

When the river dries up, these stones start talking.

The first passenger cable car in the world.

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

Ripped apart by a bomb in 1993, the shell of Pablo Escobar's infamous vacation house still stands.

A 10 million-ton rock once worshiped by the Tahamies Indians, accessed by an astounding staircase.

Hidden amid the tropical forest in the Caribbean Sea are the decaying ruins of the Cocaine King's luxurious island party home.

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

A cozy bookstore and coffee shop in the heart of Cartagena's Old City.

An ancient city hidden in the heart of the Sierra Nevada mountains.

Colorful lights and mirror-like brine pools create trippy illusions within the historic mine.

The world's tallest palm trees look like the whimsical kind of plant you'd find in a Dr. Seuss story.

Unparalleled stargazing, one of Colombia's best observatories, and a swimming pool can all be found in the middle of this ancient tropical forest.

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