The building is a gigantic piece of art inspired by the shape of a desert rose.

A staggering number of rock carvings in an abandoned quarry.

A powerful cyclone once made one of the world's largest sinkholes completely fill with water.

Where artisans use centuries-old techniques to build traditional Arabian ships.

This remote British Imperial telegraph relay outpost drove men insane.

This beautifully restored fortification kept the city safe for centuries.

Traditional architecture and ancient irrigation systems are on display in this gorgeous mountain village.

This spectacular mosque houses the second-largest chandelier in the world.

An imposing Omani fortress surrounded by date palm trees.

This bazaar is one of the oldest in the Arabian world.

A sinkhole and now a swimming hole, too, full of dazzling turquoise water.

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.

This 16th-century monastery was founded to cloister the daughters of wealthy local families.

These ruined Incan mausoleum towers still bear carvings of sacred animals on their blocks.

On this tiny spot of land in the middle of Lake Titicaca the only ones who do the knitting are the men.

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

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

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

This metal tower in the desert provides views of a handful of Nazca geoglyphs.

The mysterious "Candelabra of the Andes" could represent anything from a god's trident to a hallucinogenic plant.

A backdoor to Machu Picchu that only the most foolhardy infiltrator would attempt to breach.

These steeply terraced ruins are a stop along the Inca Trail to Machu Picchu.

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