Ancient snack bar of the Roman Empire re-opened.

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

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

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

The legendary cliffside castle of three-time Voivode of Wallachia, Vlad the Impaler.

This ancient Irish tower could easily have stood in for Rapunzel's prison.

Ancient Bronze Age rampart that was used into the middle ages.

Carvings in Turkey's Marble Road may have directed ancient Romans to a hidden brothel.

The alleged house of the Virgin Mary is tucked away in a park and nature preserve on Mt. Koressos in Turkey and is holy to both Catholics and Muslims alike.

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

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

A Bronze age settlement on the Greek island of Santorini might have been the inspiration for Plato's Atlantis.

This snug medieval lane is one of the narrowest streets in the world.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

One of the largest underground systems runs under Canada's largest urban center.

Europe's largest prehistoric mound – burial site of a legendary king?

The largest stone circle in the world has ended up bringing up more questions than it has answered.

The granddaddy of English geoglyphs dates back to the late Bronze Age.

Human-made caves excavated to hide a secret society of wealthy pagans.

See massive fossils that are over 200 million years old in northeastern Arizona.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

A series of waterfalls and pools that flow through the 'Ohe'o Gulch and into the ocean.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.