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

Every equinox this Maya pyramid puts on a spooky ancient light show.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

Solitary monument dedicated to the beauty of nature.

A stunning Catholic cathedral built by a curve-loving communist in Brazil’s newly created capital.

A labyrinthine museum chronicling the history of African culture in Brazil.

The preserved home of the first settler of "the most German town in Brazil."

The building that once housed the dictator's secret police is now a museum that documents the history of an oppressive regime and those who fought against it.

A beautiful, abandoned farming headquarters overtaken by nature and graffiti.