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

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

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

Explore the atmospheric ruins of an abandoned convent in the dense forests of Mexico's first national park.

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

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

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

The only castle in North America to ever house European sovereigns.

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

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.

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

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

This cemetery features modernist statues as strange as its name.

This semi-secret storybook hedge maze is also the oldest garden in the city.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

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

No one knows the meaning behind this giant sculpture of a nude woman with a fork riding a rooster in Havana.

Once a favorite playground for the world's most illustrious guests, Hotel Nacional's secret weapons and bunkers reveal a more menacing side to its golden history.