Peaceful gardens hide an underground torture museum.

Mexico's astounding mummy museum with "the world's smallest mummy."

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

Part bookstore, part café, and part forest.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

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

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

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