Though strikingly beautiful, Seattle's other railway station is now largely forgotten.

The king of U.S. high points towers over every other peak on the continent.

This long, dark tunnel is open to hikers, but those without lights are known to get confused even on the straight path.

The residents of the Neighborhood of Make-Believe live without much fanfare within the Pittsburgh Children's Museum.

An Inca spa, military outpost or maybe… both?

This bullring in Lima is the oldest in the Americas and the second-oldest in the world.

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

A kitschy Italian medieval-style castle incongruously located amidst one of the most historic towns in the Peruvian Amazon.

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

These ruined Incan mausoleum towers still bear carvings of sacred animals on their blocks.

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

White llama terraces dazzle in Peru's "other Machu Picchu."

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

A jungle cave in Peru of unknown depths, otherworldly sounds, and strange nocturnal birds that navigate by echolocation.

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 Uros people live on floating reed islands in lake Titicaca.

A remarkable geological formation resembling a forest made of stone.

Sleep in a glass pod dangling off a cliff.

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.

Nazca pilgrimage site covering 370 acres is a popular stop for archeologists and looters.

An unexpected desert oasis in South America.

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

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