If you can look past the nearby sewer pipes, this urban sinkhole grotto is a mini-paradise.

This ancient jade mask depicting the Zapotec bat god was found in the ruins of the pyramids of Monte Alban.

This warehouse-gallery-shop hybrid showcases Mexican craftwork at its best.

This colossal ancient sculpture of the monstrous Aztec rain god has a literally stormy history.

The splendor of this 17th century golden chapel has led it to be called the "eighth wonder of the world."

This foreboding building was the headquarters of the terrifying Spanish Inquisition in Mexico.

This incredible college library is a visual masterpiece of mosaic art. It also looks kind of like a giant boombox.

A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.

Many people don't realize there’s a lot going on in—and below—the world’s tallest triumphal arch.

A series of abstract sculptures pop up from an otherworldly volcanic landscape.

The winter home of millions of migrating monarch butterflies.

The unique collection often goes unnoticed by visitors focused only on the archaeological objects.

This strange sculpture of a menacing skull surrounded by sun rays was discovered at the foot of the Pyramid of the Sun.

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

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

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

A barbarous band of serpents guard the bases of these Aztec temples.

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

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

An airy Art Deco space devoted to the weird and wonderful folk art traditions of Mexico.

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

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

These biodiverse university gardens form a green oasis amid the urban chaos of Mexico City.

Gilded heaven for philatelists and architecture freaks, still in full working order despite sitting atop tremulous ground.