A hidden treasure of an abandoned city lies deep in the jungles of Campeche, Mexico.

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

The winter home of millions of migrating monarch butterflies.

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

A beautiful example of 18th-century engineering still standing tall.

A hidden room within the church displays an amazing collection of old choir books.

Hoax, mistake, or evidence of dinosaurs in human times?

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

By night, this auto repair shop turns into a taquería serving up some of the city's finest al pastor tacos.

Outside a market, beautiful murals pay tribute to fruit sellers and farmers, as well as a few legendary artists.

CDMX's home for the world's culinary delights.

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

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

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

This structure was moved nearly 40 feet while people continued working inside it.

This Aztec structure remained hidden until the demolition of a supermarket exposed the lost temple.