According to legend, this boat-shaped henge is built over the grave of a mythic king.

Crooked windswept pines give this old forest an enchanted and magical look.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

Dine on food tied to Viking history and legend at this subterranean Stockholm spot.

The world's largest model of our planetary system.

It houses the remains of a 17th-century version of the Titanic.

These eight mummies are the best-preserved human remains ever discovered in North America.

This high-Andean reserve protects the graceful vicuña that was nearly hunted to extinction for its precious wool.

This small oxbow lake has rare giant river otters and some Seussian-sounding birds.

This unimaginably large pile of sand near Nazca is one of the tallest dunes in the world.

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

The highest tropical mountain range in the world is in Central Peru, home to a vast array of exotic and quirky plants and animals.

The world's largest clay lick, where parrots gather to snack.

Extraordinary rock formations in open Peruvian fields.

The world's fifth tallest waterfall is a spectacular silver chute of water that cuts through the cloud forest in northern Peru.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

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

A remarkable geological formation resembling a forest made of stone.

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

A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

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

A remote candy-striped mountain in the Peruvian Andes straight out of the pages of Dr. Seuss.

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

At this beautifully preserved Pre-Hispanic site, you can see ancient petroglyphs with depictions of llamas and alpacas.