Huge stone depressions which may have acted as an Incan agricultural experiment.

An unexpected desert oasis in South America.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

A remote candy-striped mountain in the Peruvian Andes straight out of the pages of Dr. Seuss.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

A natural swimming pool in the middle of the Carite Forest.

An enchanting natural wonder in Puerto Rico's Camuy River Park.

This colorful gate stands as an entrance to the walled city of Old San Juan.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

A popular place to pick up prehistoric coral fossils from the time when Michigan was an ocean.

One of the largest crucifixes in the world stands 55 feet tall in a secluded, wooded area of northern Michigan.

This museum in the woods evokes the work and lives of Michigan's 19-century lumberjacks.

One man’s vision of living among dinosaurs credits Jesus Christ as the engine of biological evolution.