An early 20th-century bullring converted into a modern shopping center.

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

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

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

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

Ancient snack bar of the Roman Empire re-opened.

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

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

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

A dark, narrow tunnel that leads to a charming lake and waterfall.

Learn about the sweet, storied legacy of beekeeping in ancient Greece.

Swarms of dainty flying insects swarm into the Petaloudes Valley to get busy.

This towering church is home to a world-famous organ and a treasure trove of medieval art.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

A marvel of Byzantine engineering under the streets of Istanbul.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

Ancient serpentine sacrifice holder that has stood the test of time.

A tiny park in the middle of some big power politics.

Every week, a festive public jam session breaks out in downtown Asheville.

This rare basilica nestled right in downtown Asheville is an architectural marvel, inside and out.

Though his role as the inventor of baseball may be up for debate, fans still festoon Doubleday's grave with baseballs.

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.