Every equinox this Maya pyramid puts on a spooky ancient light show.

The remnants of an archaeological camp stand within Tikal National Park.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

A hidden treasure of an abandoned city lies deep in the jungles of Campeche, Mexico.

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

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

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

The world's most remote airport.

This was once the center of the Birdman cult, and is now a World Heritage Site.

The largest stone moai on Rapa Nui.

A mysterious castle built as a monument to lost love.

This railroad overpass is said to be home to a murderous goat-man whose very legend has led to very real deaths.

World's largest cave was only discovered in 1991, and now offers tours to the public.