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

Few of the many visitors to this resort town know of its hidden Maya ruins.

This cliff-face port is considered a masterpiece of mining engineering.

Crushed coral and crystals give the sand its signature coloration.

The underground sanctuary of a mysterious ancient Roman religious cult contains an exquisite traditional fresco.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

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

Ancient snack bar of the Roman Empire re-opened.

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.

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

This magical-looking island is notorious for the misfortunes suffered by its owners.

Skulls from the plague of 1656 and World War II bombings are united by a cult dedicated to caring for the ancient dead.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

The Bourbon royal family had this unique octagonal hunting "cottage" built on a tiny islet in Lake Fusaro.

Italy's "New Mountain" rose from the ground in a volcanic eruption in 1538.

Italy's third-largest Roman arena gives a peek into the underground operations beneath the ancient spectacles.

Virgil's many-mouthed gateway to the underworld.

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

A remarkable range of flora and fauna are represented in this Dominican nature preserve.

Largest pre-Lent festival in the Dominican Republic.

The first hospital in the New World.

An eccentric German artist built this weird and wondrous castle packed with shocking sculptures and alien art.

Renowned restaurant tucked in a cave once occupied by buccaneers.