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.

Death rituals and sacrifice inside a Peruvian megalith.

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

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

An unexpected desert oasis in South America.

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

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.

These magnificently sculpted tombs represent Spain's own legendary version of "Romeo and Juliet."

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

A remote candy-striped mountain in the Peruvian Andes straight out of the pages of Dr. Seuss.

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

The "Little Ones," show Portugal in full miniature splendor.

Portugal's National Pantheon has a history of curses, collapses and financial problems.

An early Portuguese serial killer's head is alarmingly well preserved in a jar at the University of Lisbon.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

This enormous censer uses a pulley system installed over 400 years ago.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

The remains of an encyclopedic sculpture garden later used as an internment camp.

"Satisfying" is a good way to describe these beautifully aligned rows of Spanish mills.