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

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

This ancient market is often referred to as the oldest shopping mall in the world.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

A Nesting Doll of Churches.

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

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

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

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

In 1909, the steepest and most difficult piece of track on the Canadian Pacific Railway was replaced with a series of spiralling tunnels cut into the mountains.

Fossils, railroads, and waterfalls!

This expansive bridge in the Canadian wilderness was originally just built for friends.

An effigy of a trapped paratrooper dangles from a Normandy church to commemorate one remarkable D-Day event.

A moving memorial to the fallen and missing from WWI trenches.

In the shadow of a former battleground, the resting place for nearly 2,000 soldiers who died in World War I.

A rare example of World War I trenches from the British front.

A sulfuric hellscape in southern Italy.

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

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

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

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

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

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