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.

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.

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

Meant to be one of the most extravagant hotels in the world, now an eerie, abandoned architectural gem in Mexico City.

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

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

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

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

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

A barbarous band of serpents guard the bases of these Aztec temples.

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

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

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

Superstitious? Discover the witchy side of Mexico through its largest esoteric market.

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

This fairytale medieval church in Poland originally spent centuries in Norway.

A 90-ton, gravity-defiant steam locomotive shoots for the skies in this bizarrely beautiful public artwork.

A collection of old neon signs from all over Poland line a secluded courtyard.

This hidden collection of everyday objects illustrates life within communist Poland.

A mysterious structure left behind on the Polish mountainside, sometimes called "Hitler's Stonehenge".

A menacing statue of this mythical creature can be seen at the legendary site of the monster's lair.

The world’s narrowest house makes for an awkward, four-foot-wide living space.