Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Breathtaking and huge 430 year old maps of Italy.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

This historic hotel preserves many treasures from its heyday hosting passengers on the Orient Express.

The ancient latrines of the Greeks, in all their public glory.

This column celebrates Rome's victory over the Goths, and may be the oldest Roman monument in Istanbul.

Ancient serpentine sacrifice holder that has stood the test of time.

The best-preserved ancient theater in the world.

This famous city eluded concrete detection until the early 2000's.

A marvel of Byzantine engineering under the streets of Istanbul.

The most famous location in China was home to whole dynasties worth of imperial rulers.

One of its engravings is believed to be among the first representations of medical and surgical instruments.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

One of the most well-preserved temples of ancient Egypt.

Ozymandias’ time-keeping temple.

Founded in 670, this ancient mosque is an architectural time portal.

An ancient Phoenician citadel once stood at the site where Queen Dido first landed, according to legend.

The ancient heart of Tunis is an enormous maze of narrow streets and alleyways.

The best-preserved Roman small town in North Africa.

The largest and best-preserved Roman amphitheater in Africa was designed to seat 35,000 people.

An ancient burial ground believed to have been used for ritual sacrifice.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.