This space-age looking obelisk rises over a city in the rainforest, meant to resemble the local castaña tree.

Bathe in these natural hot springs located high in the Andes Mountains.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

A Christian monastery stands on what was once a holy Incan temple.

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

This Peruvian canyon is filled with geometric salt pools that have been being harvested since the Incan empire.

Huge stone depressions which may have acted as an Incan agricultural experiment.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

At the site of a graffiti artist's murder, fellow artists gather to pay homage.

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

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

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

This unofficial museum details the rise and fall of Colombia's most notorious narcotrafficker, Pablo Escobar.

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

An unusual and beautiful form of mass transit serves the city's steepest neighborhoods.

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.

Legend says this sacred tree was a gift from goddess Athena.

These egg-shaped buildings constructed by Jesuits house a quaint museum in the Andes.

A brightly colored natural bridge formed by mineral-rich hot springs high up in the Andes.