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

A seemingly endless landscape of pure salt stretches far across Bolivia.

A desert that evokes the surreal.

Site of James Cook's historic observations of the 1769 transit of Venus.

On the outskirts of a desert trading village high on the Andean plain, steel giants have been destroyed by salt winds.

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

Part of one of the largest flooded cavities on the planet, and littered with prehistoric animal bones.

Beautiful public park off the beaten path and away from tourists.

A 125-meter long "tribute to the Brazilian people."

This massive Brazilian church is built like an angular, technicolor pyramid left by Mayans from the future.

This plaza at the end of the world teems with monumental tributes to a problematic history, and laser discs.

A Christian retreat founded to welcome refugees fleeing from the Nazis during World War II.

This stunning mass of ice spans 121 square miles and is still growing.

The inspiration for the Patagonia Clothing logo, Cerro Fitz Roy turns pink at sunrise.

One of Chile's most active volcanoes is riddled with beautiful caves.

It's just another skyscraper, but it's shaped like '90s cell phone.

What was once a unique system of urban elevators is turning into a mechanical ruin.

Pivotal home of Nobel Prize winner Pablo Neruda.

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

A beautiful deserted greenhouse in the middle of a park.

The largest stone moai on Rapa Nui.

This was once the center of the Birdman cult, and is now a World Heritage Site.

In the Middle Ages, villagers would sound this stone trumpet to boost fertility and coax fish to shore.

The world's most remote airport.