This staircase full of Mayan hieroglyphics is perhaps the largest single text in the world.

Hidden deep in the Guatemalan jungle is a turquoise paradise of natural pools, caves, and waterfalls.

Beach instrument turned bed and breakfast.

Underwater art project will double as a massive artificial coral reef to help regenerate the damaged ecosystem.

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

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

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

A National Historic Landmark with a scenic clock tower and park filled with deer and peacocks, plus a military museum.

Ruins of a once-opulent grand Victorian resort.

An abandoned movie set in the desert of West Texas.

An abandoned quicksilver mining town surrounded by the Big Bend parks.

A notoriously corrupt Chief of Police's deteriorating Greek-themed playhouse.

A 500-year-old series of tunnels long believed to be folkloric was uncovered beneath the streets of Puebla.

The "world's smallest volcano" has been used to store meals and dispose of dead bodies.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

High atop a Mexican rainforest mountain, this ancient pyramid once drew pilgrims countries away.

Concrete construction materials turned into a fashionable capsule hotel in rural Mexico.

A jewel of the Mexico city skyline now slowly crumbles after surviving an earthquake.

A jaw-dropping "megalibrary" that turns book-browsing into a geometric adventure.

66,000 pieces of art, donated by one of the world's richest men.

The only castle in North America to ever house European sovereigns.

Mexico's astounding mummy museum with "the world's smallest mummy."

Keshwa chaca, among the last handwoven Incan bridges, crosses Apurimac Canyon in Peru.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.