The ancient tomb acts as a calendar that keeps perfect time.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

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

105-foot wide giant metallic flower blooms anew every day in the heart of Buenos Aires.

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

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

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

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

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

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

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.

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

Prehistoric history as seen through the lens of an outsider artist.

This imposing memorial contains the remains of Che Guevara — and 29 other guerrillas who died with him in Bolivia.

No one knows the meaning behind this giant sculpture of a nude woman with a fork riding a rooster in Havana.

Once a favorite playground for the world's most illustrious guests, Hotel Nacional's secret weapons and bunkers reveal a more menacing side to its golden history.

This subterranean disco dance club in a Cuban cave comes with bright lights and a dark legend.

Castro's communist ice cream mothership has been serving five-scoop "salads" for over 50 years.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

Sparkling, calcite-covered skeletons of children who may have been sacrificed to appease an angry god.

This fortress in Honduras was built to resist pirates, but its builders had more to fear from the British.

This staircase full of Mayan hieroglyphics is perhaps the largest single text in the world.