Diego Rivera's massive tiled fountain and failed infrastructure project.

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

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

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

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

Twelve natural mummies are displayed in the crypt of this former monastery school.

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

The famous artist couple lived and worked here, in two different houses separated by a bridge.

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

A church dedicated to the Mexican skeleton saint.

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

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

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

Part bookstore, part café, and part forest.

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

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

A giant "X" symbolizes the blood spilled from the brutal Juárez drug wars.

Search for traces of the dinosaurs that roamed here more than 90 million years ago.

A Bhutanese temple gifted from the isolated Himalayan kingdom is now a surprising cultural gem located at the University of Texas at El Paso.

The house's confection-like decorations are the result of one man's painstaking work over decades.

In the middle of a desert subdivision, there is supposedly an impact crater site from Kcymaerxthaereal times.

At this research institute, the chile is king.

Wee (and not so wee) footprints that insects and reptiles of the Paleozoic Era left behind.

The remote resting place of a notorious Wild West outlaw whose death is shrouded in mystery.