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.

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

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

A mouldering Colombian bull ring stands as a reminder of the country's complicated relationship with a brutal sport.

An inspired museum dedicated to the patron saint of enslaved people, inside the cloisters where he lived and died.

Enchanting cave with a river crashing through the roof.

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.

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

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.

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

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

This whimsical home made entirely from clay is basically a giant piece of pottery.

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

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