This cathedral hides a sculpted dog that determines your fate and an unexploded shell from World War II.

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

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

A fake medieval village in the middle of Turin.

A lover's walk between hilltop towns, decorated with graffiti love notes.

Ancient snack bar of the Roman Empire re-opened.

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

Five candy-colored villages on the Italian Riviera.

Go inside to really appreciate this 500-year-old technological masterpiece.

This 19th-century prison once held Irish revolutionary Constance Markievicz, writer Frank O’Connor, and a nine-year-old pickpocket.

One of the oldest lighthouses in the world, this structure was built more than 800 years ago.

An important landmark in the history of algebraic logic.

This beautiful site is where the first transatlantic telegraph was sent from.

This World War II relic let Allied pilots know they were entering neutral airspace.

An Irish town has built a statue to a silent film actor simply thanks to the holidays he once spent there.

A stunning medieval castle owned and restored by the famed actor Jeremy Irons.

An oddly conical beacon perched atop beautiful Irish cliffs.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

Behemoth, cannon-like telescope operated by generations of Irish earls.

The skeleton of a whale that beached itself in this Irish town is now on display in their public park.

The modern birthplace of Irish freedom.

A hugely vast Irish landscape of barren rock that stretches for miles.

This ancient Irish tower could easily have stood in for Rapunzel's prison.