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.

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

If you can look past the nearby sewer pipes, this urban sinkhole grotto is a mini-paradise.

The largest collection of artifacts from the Olmec civilization, the mother culture of Mesoamerica.

These enigmatic columns tower over the ruins of an ancient Toltec city.

A striking depiction of Teotihuacan's mysterious "Spider Woman."

Frida Kahlo's childhood home, now a museum of her life and works.

The remains of what was the most important religious complex in coastal Peru for over a millennium.

This space-age looking obelisk rises over a city in the rainforest, meant to resemble the local castaña tree.

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.

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

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

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

An Inca spa, military outpost or maybe… both?

This Peruvian canyon is filled with geometric salt pools that have been being harvested since the Incan empire.

The Uros people live on floating reed islands in lake Titicaca.

Final resting place of Antarctic explorer Ernest Shackleton.

This haunting ghost ship stands beached in the waters off the coast of the Falkland Islands.

The southernmost Anglican cathedral in the world has whale bones standing in its yard.

The rusty hull of this 1899 ship serves as a tribute to explorers of the bottom of the world.

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

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

The birthplace of the very first human resident born in Antarctica.

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