This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

Two stone columns flank the grand Venice square, but there were supposed to be three.

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

The once highest point in China blends symbolic design with a kick of adrenaline.

The bluer than blue waters in these natural Israeli caves are reached via the world's steepest cable car.

The only quarter of the Old City not dedicated to a major world religion.

After over 100 years out of service this landmark windmill once again turns as a symbol of Jerusalem's self-sufficiency.

The home of the Dead Sea Scrolls is an abstract modernist dream.

After Christopher Columbus died, his son built a fancy house to rule from.

The oldest colonial fortress in the Americas was once the home and later prison of Christopher Columbus.

Built in 1512, the oldest cathedral in the Americas.

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

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

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

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.

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

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

This bridge was constructed from the rubble of the infamous Bastille.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

A unique seaside cave where Aleister Crowley faked his own death.