These subterranean models show Mexico City's central square during three different eras.

This museum houses two of Mexico's most impressive Aztec monoliths.

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

The turquoise-studded skull of a long-dead Aztec man sits within Mexico City’s Museum of Anthropology.

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

This colossal ancient jaguar sculpture was used as a vessel for the hearts torn from sacrificial victims.

The most complete statue of this Aztec god sits a top a throne carved with images of hallucinogenic plants.

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

These spectacular, symbolic serpents lie within the shadow of the Great Temple.

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

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

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

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

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

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

The famous artist couple lived and worked here, in two different houses connected by a bridge.

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

Frida Kahlo's childhood home, now a museum of her life and works.

A Christian monastery stands on what was once a holy Incan temple.

An Inca spa, military outpost or maybe… both?

This is why we can't have nice things on the Incan Trail.

These ruined Incan mausoleum towers still bear carvings of sacred animals on their blocks.

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

Mystic Incan rock piles three miles above sea level.