This popular cave pool is truly magical, despite the crowds.

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

The burial place of some of Mexico's most prominent residents is full of macabre stories and hidden masonic symbols.

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

The ruins of an ancient Mayan city, beautifully preserved and only accessible by boat.

The jewel of western Mexico's archaeological legacy is this tiered circular pyramid now covered in grass.

At a museum of everyday objects, it is the act of collecting that is really on display.

A flooded Mexican cave that hides a river beneath the water.

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

This crumbling Art Deco movie palace in Mexico City has been abandoned for two decades.

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

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.

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

Explore the atmospheric ruins of an abandoned convent in the dense forests of Mexico's first national park.

The winter home of millions of migrating monarch butterflies.

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

A quirky and charming restaurant founded by artists.

Meant to be one of the most extravagant hotels in the world, now an eerie, abandoned architectural gem in Mexico City.

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

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

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

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