This imposing memorial contains the remains of Che Guevara — and 29 other guerrillas who died with him in Bolivia.

An old slave lookout in Cuba's historic sugar cane fields.

This subterranean disco dance club in a Cuban cave comes with bright lights and a dark legend.

This crumbling medieval basilica once attracted pilgrims by the thousands to collect a miraculous dust that formed above the saint's tomb.

The ancient latrines of the Greeks, in all their public glory.

Seven early Christians were sealed into a cave where legend has it they slept unharmed for centuries.

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

At this ancient settlement at the foot of Mount Babadağ, honeycomb tombs are carved into a round cliff.

These tombs were built into the side of a mountain so that ancient angels could reach the dead.

Life and death are on parade at the most reliably perilous site of “the Great Migration.”

Breathtaking Byzantine paintings cover the inside of this 12th-century church.

One of the best-preserved medieval streets in Europe.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

An ancient Greek monument and a Byzantine church coexist inside this cave.

Legend says this sacred tree was a gift from goddess Athena.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

A popular legend claims that the famous pizza was invented at a restaurant in this alley.

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

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

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

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

Ancient snack bar of the Roman Empire re-opened.

This seaside Italian village doesn't just look Escher-esque, it actually inspired the mind-bending artist.