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

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.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

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

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

This curious, round temple is the oldest still-standing marble building in Rome.

The yawning maw of this pagan visage is said to bite off the hands of liars.

This subterranean shrine beneath a bike rental store celebrates the iconic Italian scooter.

One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.

Breathtaking and huge 430 year old maps of Italy.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

This building features dozens of faces along its facade, although one is a bit chilling.

Once known for its horse-powered knife sharpening, this 200-year-old shop offers an array of blades and hard-to-find culinary tools.

A golden temple atop a sacred mountain, known for its giant effigy of the revered Pu Xian.

This Tang Dynasty behemoth is the biggest Buddha in the world.

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

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.

An Inca spa, military outpost or maybe… both?

A Christian monastery stands on what was once a holy Incan temple.

Death rituals and sacrifice inside a Peruvian megalith.