The disputed geographic center, or "navel," of Italy.

The ruins of this Roman temple dominate the small city in southern Lazio.

The only visible remains of this ancient Greek underground temple is its roof protruding from the earth.

Τhis feline monument commemorates fallen soldiers on a field that saw many, many battles.

This statue is the only female representation of Rome's "talking statues."

A massive marble foot is tucked away in a small alley near the Pantheon.

Believed to be the remains of the lost Temple of Minerva, this nymphaeum has been known by its misnomer to this day.

Deceased nuns were placed on stone chairs to decompose, while the surviving nuns prayed near the lifeless bodies.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

This medieval city gate is now a blend of the past and the modern world.

These ruins once flourished as the capital of the Lydian kingdom, often credited with the invention of metal coinage.

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

These artifacts were discovered during the construction of the airport, with some dating back to the Neolithic period.

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

An 18th century fountain and two columns are all that remains of Rome's forgotten river harbor.

Rome's first modern graffito is all that is left of a peaceful protest from the 1970s.

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

Only open for two days a year, this church links ancient Greek and modern Christian celebrations.

According to legend, this cavern holds the passage that Persephone used to travel to and from the underworld.

Inside this art museum resides one of Glasgow's most famous musical instruments.

This hidden oasis features a stunning view of the Hudson River and the Palisades from a castle-like museum.

Quite possibly the oldest love poem known to humankind.

Try a classic Necco candy bar being resurrected in a small suburban shop.

A physical reminder of Earth's ancient past, this rock results from the photosynthetic processes of some of the oldest forms of life.