Erected in 1803, it is the first astronomical observatory that was built in the Americas.

What was once the longest suspension bridge in Latin America was directly inspired by the iconic Brooklyn Bridge.

The entire town looks like a slice of Spain that was carted across the ocean and plunked in the Andes.

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

A giant repository of accidentally discovered cave paintings up to 30,000 years old.

The potters' quarter is packed with artists sculpting clay gods with mud from the sacred Ganges river.

A towering work of stone and philosophy that was constructed using ancient Hindu science.

Buddhist monk remarkably preserved because he started the mummification process while still living.

This museum is housed in an unassuming building that witnessed one of the most daring feats of satire in modern history.

A collection of weird and wonderful art fills a former houseplant nursery.

This whimsical statue dumps water on its head to symbolize knowledge flowing into his brain. Or maybe booze.

This 17th-century structure is a beautiful testimony to traditional Persian architecture

This lake in northwest Iran has started turning from green to red more frequently than scientists are comfortable with.

This ancient fortress in Iran was once the oldest and largest treasury in the world.

Burial site of a Jewish prophet revered in Iran.

The fire inside this temple has burned for more than 1,500 years.

The hottest, driest, and most scenic desert on Earth.

The palace of the King of Kings, burned by Alexander the Great.

An Italian hillside ghost town.

Skulls and skeletons are omnipresent in this church dedicated to souls trapped in purgatory.