This stunning Brazilian library contains the largest collection of Portuguese texts outside of Portugal itself.

A 500-year-old series of tunnels long believed to be folkloric was uncovered beneath the streets of Puebla.

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

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

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

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

An art museum with an eclectic design and a scandalous past.

A museum founded to reflect on and remember the human rights abuses under Chilean dictator Augusto Pinochet.