These haunting ruins of a 700-year-old Prehispanic city have witnessed centuries of wars and massacres.

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

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

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

An ancient system of freshwater caves filled with animal bones, including that of species long-extinct.

The winter home of millions of migrating monarch butterflies.

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

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

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

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

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.

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

An island filled with hundreds of hanging, decomposing, decapitated dolls.

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

This striking public art installation is suspended above a public park, designed to gently move in the breeze.

In this small Phoenix taxidermy emporium, you can find everything from a squid in a jar to a freeze-dried toad.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

Miniature art that tells an enormous story.

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