This Roman monument is surrounded by more recent construction, offering a stark contrast between ancient architecture and the modern urban landscape.

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

Also known as the Temple of Poseidon, this is one of the best-preserved Greek temples in the world.

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

Ancient snack bar of the Roman Empire re-opened.

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

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

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

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

The burial place of an obscure North African saint was turned into a macabre body preservation factory for the 17th-century Neapolitan elite.

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

A submerged archeological park still holds the wonders of a Roman Sodom.

2300-year-old Roman road connecting the empire.

This curious, round temple is the oldest still-standing marble building in Rome.

This sea-based blowhole releases seawater when waves hit the coastal caves.

Home to the last shore-based whaling station in Australia.

Alien rock formations grown from the sands of an Australian national park.

Ships still use this historic lighthouse to navigate dangerous, island waters.

This Western Australian mint was established during the height of the Australian gold rush.

One of the world’s oldest surviving convict prisons, once the scene of daring escapes and riots.

The longest timber-piled jetty in the world has an underwater observatory.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.