This ancient market is often referred to as the oldest shopping mall in the world.

This large, circular tomb is the final resting place of the first emperor of Rome.

Fortified medieval tower house with lovely roof garden.

Next to the Leaning Tower of Pisa is a cemetery home to ancient sarcophagi and disturbing murals.

This tiny islet has somehow housed an ancient temple, two monasteries, a church, a fortress, and a restaurant.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

The walls and streets of the ancient city are peppered with penises.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

More than 450 years ago, an Italian nun became the first woman to paint the iconic subject.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

Dramatic sea stacks adorn the coast of this small village on the Adriatic coast.

A long-buried ancient ruin unearthed right in the middle of the city.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

In the Scottish Highlands, this 13th-century castle ruin is hidden at the end of a farm track.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

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

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

The Vatican's secret porn-festooned bathroom was painted in erotic murals by one of the greatest artists of the Renaissance.

Breathtaking and huge 430 year old maps of Italy.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

The ruins of an important pilgrimage destination for worshippers of a Maya fertility goddess.

One of Mexico's least-visited archaeological sites is tucked away inside a theme park.