This neon blue river gets its color from a unique mix of bacteria and volcano minerals.

Sloth rehabilitation center in the jungle of Costa Rica.

Where dogs like the rare "Fire-Tailed Border Cocker" run free on the mountainside.

A Mayan village preserved for centuries in volcanic ash.

A ruined Maya city that suffered a years-long case of mistaken identity.

An enormous, 30-story-deep hole in the middle of Guatemala City.

An impressive century-old, to-scale topographical map of Guatemala.

Sparkling, calcite-covered skeletons of children who may have been sacrificed to appease an angry god.

The largest garbage dump in all of Central America is home to a tragic community that make their living from the refuse.

This staircase full of Mayan hieroglyphics is perhaps the largest single text in the world.

The youngest volcano in Central America.

Mesoamerican monoliths and zoomorphic stones covered in royal visages, ancient mythology, and grand celestial events.

These colorful sawdust illustrations are trampled into non-existence only moments after they are finished.

This incredibly diverse research station is one of the largest tropical botanical gardens in the world.

This collection of historical artifacts and tropical wildlife waits just beneath the surface of the water.

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.

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

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

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

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

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

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