Discarded animal sculptures stand forgotten by an abandoned aquarium and water park in Bosque de Chapultepec.

A jewel of the Mexico city skyline now slowly crumbles after surviving an earthquake.

This piece of a Renaissance-era Spanish castle remained lost for decades.

This architectural wonder of Mexico City houses several art schools and national research centers.

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

The extremely grey columns of one of Mexico City's most iconic beltways are slowly gaining a bit of color.

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

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

An extravagant 18th-century fountain built with bits of broken ceramic.

Legend says the building's unusual features were added at the request of a paranoid president.

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

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

One of the world's richest men bought this former paper factory and transformed it into a mall.

A "time traveler's" vision of human history stretches throughout Mexico City's Copilco metro station.

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

This laboratory has a remarkable concrete roof that measures less than an inch at its thickest point.

This mid-century mural portrays humankind's spiritual and scientific journey.

A gigantic, symbolic artwork covers the side of the building.

The Mexican painter Diego Rivera created this unusual museum to display his collection of pre-Hispanic artifacts.

This extraordinary art museum is like a secret world on the edge of Mexico City.

A small pack of an ancient, hairless breed of dog once believed to guide souls through the underworld lives on its grounds.

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

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

This ancient structure was built by a mysterious civilization that was largely destroyed by a volcanic eruption.