From carts to cars, this leftover Roman bridge in France has managed to survive for centuries.

This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

This lake’s emerald green waters are a spectacular sight, but it’s not a great place for a swim.

Astronomical observatory above Lake Titicaca.

This red lake 4,000 meters above sea level is home to rare flamingos.

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

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

It took 82 years and four different plaques to finally get the story right.

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?

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

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

Now containing the bones of the actual conquistador, instead of someone else.

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

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

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

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.

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

The (usually) serene burial place of the world's most notorious drug lord.

This small city park is best known for the nightly convergence of thousands of shrieking parakeets.

This colonial town in Colombia sits around the largest stone paved square in South America.

Two identical statues by Fernando Botero, one blown to pieces in a terrorist bombing, the other donated as a gift for peace.