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

Ancient snack bar of the Roman Empire re-opened.

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

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

These "anatomical machines" are only one of the many strange items in this Italian crypt.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

Stone Age solar temple is aligned with the sun on each equinox and solstice.

Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Architectural monsters are devouring this palace's every door and window.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

This prison on the Maltese island of Gozo is almost 500 years old, and they have the graffiti to prove it.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

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

What once sat in the world’s spotlight is today a largely disused ghost complex.

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

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

A collection of outdoor mystical statues paying homage to indigenous Australians and ecological stewardship.

An unphotographable nightly march of tens of thousands of "fairy penguins" from sea to shore.

For better or worse, this whimsical sculpture garden was a favorite place of Rupert Murdoch's.