One of the most photographed locations in the entire city.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

This mystical orb covered in strange symbols is thought to have been used in ancient Greek magical rituals.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

Legend says this sacred tree was a gift from goddess Athena.

This picturesque Umbrian city has a subterranean side that has long remained hidden.

"X" marks the spot of an echo chamber in the middle of a plaza.

Known as the most resilient water tower in the region.

With some 500,000 books across five buildings, this bookstore is a reader's paradise.

This Italian stadium makes liberal use of fascist statuary to evoke classical sporting arenas.

A modern sliver of architecture in Roma.

Architectural monsters are devouring this palace's every door and window.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

This equestrian statue of Constantine the Great has been the subject of criticism for centuries.

The first statue to be added to Saint Peter's Square in over 350 years is an ode to migrants and refugees around the world.

If you want to talk to the Pope you will have to stare down this surreal vision of Jesus rising from a nuclear hell.

This unassuming bridge is most likely one of Michelangelo's unfinished masterworks.

Gods clash with machines in a power plant regenerated as a museum.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

One of the two original gateways into the Kasbah, this gateway is a nesting site for storks.

This vast masterpiece of Moroccan architecture spreads across 20 acres.

Deliberately hidden for centuries, the magnificent Saadian Tombs were eventually uncovered in 1917.

A freedman baker’s lavish tomb has a relief showing various stages of Roman bread making.