This landmark jazz venue is the oldest continuously running African-American club in the United States.

This sprawling collection of saintly relics includes such fascinations as wood from the Cross of Jesus and threads from Mary's veil.

The oldest operating pharmacy in the world features 800-year-old recipes.

The medieval network of canals hidden underneath the city is opened to explorers each year.

Hundreds of unusual wheel crosses poke above the earth in this small Estonian cemetery.

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

Vast network of air raid tunnels beneath Lombardy's capital.

The train platform where Jews were sent to concentration camps is now preserved as a Holocaust memorial.

Ride a boat through this magnificent underground world, which now doubles as a theater.

Ham is serious business at the Prosciutto Museum-Serious, delicious business.

Charles Dickens was not a fan of the ghastly wall dressings in this 6th century church.

This gallery commissioned by Cardinal Spada is known for its magnificent optical illusion.

In the early Roman Empire, people deemed traitors and criminals were tossed to their deaths from this rock.

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

The small peaceful island off the Venice tourist circuit is where the city began more than 1,500 years ago.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

A stunning cemetery famous for its extraordinarily delicate & lifelike mourning sculptures.

This is the oldest Roman-made bridge in the city still existing in its original state.

This abandoned island off the Venetian coast has been a radical monastery, a political prison, and a secret Nazi base.

People have been living in the cave houses on this Italian hillside since the Neolithic era.

Ancient ruins hidden underneath a modern luxury hotel.

Venice's island of the dead.

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

Hanging within this medieval church are the bones of a beast allegedly slain by a fourth-century saint.