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

A dangling church built over a Colombian gorge.

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

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

This collection of ancient, mountaintop, underground tombs was once hidden by decades of bloodshed.

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

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

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

Only gap in the 30,000-mile span of roads called the Pan-American Highway.

A lighthouse marking the northernmost point of continental South America.

Enchanting cave with a river crashing through the roof.

Outdoor escalators and art have helped change what was once a notoriously dangerous part of Medellín.

A museum of memories in what was once one of the most violent cities in the world.

Located outside Medellín, this Colombian park focuses on conservation and sustainability.

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

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

Perched atop the highest hill in Cartagena, this 17th-century convent offers spectacular views of the city.

This elegant Colombian fortress was one of the torture headquarters for the Spanish Inquisition.

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

The 17th-century hacienda where Simón Bolívar spent his last days before dying from tuberculosis.

A museum built around a bus-sized fossil on the side of the highway.

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

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

Pilgrims each carried a brick to the top of Mount Monserrate to help build this historic sanctuary in Colombia.