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

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

Beneath the most controversial monument in Mexico City is a cultural center that exhibits only digital art.

This strange sculpture of a menacing skull surrounded by sun rays was discovered at the foot of the Pyramid of the Sun.

Get a privileged view over Mexico City's Historic Center from a terrace right in its heart.

The ruins of an ancient temple to the Aztec wind god discovered in the middle of a metro station.

This one-window stand has been home to a giant vat of slowly simmering meats and an array of unique tacos for almost 50 years.

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

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

This old-school café is famous for serving coffee, chilaquiles, and the Cuban Revolution.

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

A scientific repository of goiters, boils and other ailments throughout Mexican history.

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

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

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

Mexico City's largest market contains a Willy Wonka-esque wonderland.

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

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

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

A jaw-dropping "megalibrary" that turns book-browsing into a geometric adventure.

Part bookstore, part café, and part forest.