Museum housed in underground tunnels that date back to Buenos Aires's earliest settlements.

An Argentinian businessman facing terminal cancer built this whimsical medieval village using salvaged materials.

A neo-Gothic castle in the Argentinian countryside.

Massive rock sculptures formed during the time of the dinosaurs still stand undisturbed.

A toxic lake near a volcanic caldera that is home to flamingos and other life.

A bright little alley in La Boca is a part of tango history.

A gateway to a mysterious network of underground tunnels.

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

Once swallowed by flood waters, this village has emerged as an eerie shadow of its former self.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

Stenciled handprints and wall paintings dating back 10,000 years, some of the earliest forms of cave art.

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

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

This historic, palatial theater is now one of the world’s most beautiful bookstores.

The ruins of a grand theater destroyed during the most powerful seismic catastrophe ever recorded.

This iconic hilltop church doubled as a lighthouse in the 19th century, guiding ships into the port of Valparaíso.

Full-scale dinosaurs dominate the forested park in the middle of Chile’s second city.

A 63-foot-tall swinging ball hypnotizes passersby, and proves to any remaining doubters that the Earth is spinning.

The hellish conditions of this abandoned mine that snakes beneath the Pacific Ocean gave it its diabolic name.

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

A fantastical and futuristic temple of light built from nine monumental glass veils.

Named for the DeFoe novel inspired by a stranded sailor, this island is known for its rare plants and extreme beauty.

This large round boulder is said to emit spiritual power, but it may just be magnets.

This enchanting rainforest hotel looks as though it grew from the forest itself.