A spring water stream jumps through a walkable "bridge" cavern and a narrow canyon.

This immense scene of a cosmic battle between a jaguar and serpent illustrates the Aztec concept of the duality of life.

This hotel is an amazing example of the Escuela Tapatía de Arquitectura movement.

Once home to an aristocratic family and a workers' organization, this intricately tiled building now houses a chain restaurant.

The largest cave shaft in the world is home to thousands of birds and popular with BASE jumpers.

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

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

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

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

Extraordinary sculpture garden created by an eccentric English poet.