This maximum-security prison was abandoned to make way for a national park.

This colonial town in Colombia sits around the largest stone paved square in South America.

The world's largest ecosystem of its kind is home to South America's only native species of bear.

The world's only pure blue lizard lives exclusively on this secluded tropical island.

Storied crypts fill the most famous cemetery in Colombia.

The enormous appendage offers spectacular views of Colombia's Huila Department.

A three-tiered waterfall plummets from a mountain cave with amazing views over the countryside.

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

This tiny shop has been serving traditional tamales for more than 200 years.

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

The caldera of this mini-volcano has been turned into a naturally heated mud bath.

Enchanting cave with a river crashing through the roof.

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

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

This picturesque mansion has gone from opulent ruin to nature museum.

A dangling church built over a Colombian gorge.

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