A Mexican Romeo-and-Juliet-esque legend has given this super-narrow alleyway a reputation for romance.

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

A hotel masquerading as a medieval castle overlooks a Mexican city.

Peaceful gardens hide an underground torture museum.

Kitschy horror displays now fill the house where some very real serial killing took place.

A fabulously bizarre surrealist sculpture by the late artist Leonora Carrington.

On a cornerstone of the City Museum is the head of a monstrous serpent stolen from an Aztec pyramid 400 years ago.

A museum in the former home of Marxist revolutionary Leon Trotsky.

In Coyoacán, a pair of coyotes crown a public fountain in reference to the ancient Aztec name of the borough.

Inside the cloister of the Temple of San Juan Bautista is a ceiling decorated with gold Baroque illustrations.

The ruins of the bathhouse used by the ill-fated last Aztec emperor still lie in Chapultepec Park.

The striking jade death mask of an ancient Maya king is displayed in a replica tomb in Mexico City.

Come face to face with the ferocious visage of the serpent-headed mother goddess of the Aztecs.

This stunning and ethereal mural symbolizes the beauty, unity, and diversity of humankind.

It's believed this golden brick is part of the legendary lost Aztec treasure.

Dating back to the second century, vestiges of prehispanic mural paintings are found in this underground palace.

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

A bronze statue of the famed Prussian naturalist commemorates the year he spent in Mexico.

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

Diego Rivera hid various people and symbols in his first large-scale mural project.

Once home to an aristocratic family and a workers' organization, this intricately tiled building now houses a chain restaurant.

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

These sacred Mesoamerican ruins feature peculiar petroglyphs hidden in the stones.

One of the city's few vendors selling the Sierra Norte's ancestral beverage lies within a hidden farmers market.