An elaborate Mayan city shrouded in alien conspiracy revealed the tomb of Pacal the Great.

A uniquely robust and historic look at Mexico's omnipresent dance with Death.

The largest cave shaft in the world is home to thousands of birds and popular with BASE jumpers.

A church dedicated to the Mexican skeleton saint.

This fantastical house shaped like a seashell brings aquatic design to architecture.

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

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

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

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

Frida Kahlo's childhood home, now a museum of her life and works.

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

Extraordinary sculpture garden created by an eccentric English poet.

These azure waters were thought to lead to the Mayan Underworld.

An Aztec snake god has taken the material form of an apartment complex.

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

In a town known for its large hats, this one is the biggest.

These overlooked ruins give an intimate look at the Inca Empire's urban planning prowess.

Thousands of volcanic rocks carved 1,000 years ago.

Pre-Incan aqueduct amidst a stone forest in Peru.

Ancient Peruvian fertility temple or modern money-making hoax? Either way these monoliths still look like penises.

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

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

This space-age looking obelisk rises over a city in the rainforest, meant to resemble the local castaña tree.

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