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

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

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

This cascade of mineral-rich hot springs and waterfalls is an oasis in the Jordanian desert.

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

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

Erotic art covers the walls of the largest ancient pleasure palace.

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

Ancient snack bar of the Roman Empire re-opened.

This amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

Pompeii's less famous neighbor is still revealing her secrets.

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

An overlooked memorial honoring the local Washington residents who died in World War I.

Look closely and you’ll notice that the color changes a third of the way up the tower.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

A perfect circle of 24 mysterious holes dates back to prehistoric times.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Deep in the Guatemalan jungle stands an ancient pyramid that once marked the reign of a king.

Quite simply the largest tree in the world (by volume).

Colorful Native American paintings are hidden within this small cavern.

This bright yellow building is packed with sweet treats from all around the world, from chocolate-covered crickets to whoopie pies.