These delicate ruins need more tourists to keep them from fading away.

This set of mysterious petroglyphs in the Peruvian jungle could shed light on centuries-old activities in the region.

These giant mummies are set ominously into a Peruvian cliffside and topped with real human skulls.

Hundreds of mummies in a silent room, some with eerily pained expressions preserved on their faces.

An Archaeological Wonder of Peru, and the largest stone ruin site in the New World.

One of the world's tallest waterfalls wasn't revealed to the world at large until 2006.

Now containing the bones of the actual conquistador, instead of someone else.

The remains of what was the most important religious complex in coastal Peru for over a millennium.

Visiting dignitaries and Hollywood stars once stayed at this 1920s hotel, alongside ghosts that are said to haunt its corridors.

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.

A backdoor to Machu Picchu that only the most foolhardy infiltrator would attempt to breach.

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

These steeply terraced ruins are a stop along the Inca Trail to Machu Picchu.

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.

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

A paradisical gorge with rapids, waterfalls, and wildlife whose raw beauty is the stuff of CGI movies.

This scalding hot river was thought to be a myth until one geoscientist made it his quest to study the mystical waters.

Art school in the Amazon: Drugs, nature and sustainable agriculture.

This imposing memorial contains the remains of Che Guevara — and 29 other guerrillas who died with him in Bolivia.

The house that birthed The Old Man and The Sea is now a museum devoted to the old man who wrote it.

One of many gator theme parks, abandoned in the sugar fields of South Florida.

A much more welcome kind of snowbird vacationer, manatees camp out in these springs every winter.

This Florida sinkhole hides a rainforest-like micro-environment in its depths.