The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

A statue representing a lost Roman profession that was vandalized for centuries.

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

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

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

This amazingly preserved Doric temple was abandoned before it was ever completed.

Leveled by an earthquake, this Italian village is now preserved as a massive concrete art project.

This entire town moved to a safe location after it was devastated by an earthquake, but the remains of the original town are still around.

A madman's personal garden filled with 1,000 sculpted heads.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

The entire known universe of the ancient Etruscans is held inside this bronze model of a sheep’s liver.

Tourists to the mountaintop Sicilian town often overlook its ancient fortifications.

The rusting relics of Southampton's former luxurious flying boat industry.

Climb inside an iron crystal magnified 165 billion times its normal size.

A little sculpture with a large wardrobe.

Why a column on the entrance is inscribed with a verse from the Quran is one of Sicily's many mysteries.

The final resting place of the great navigator, or maybe his brother.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

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

Massive galleon from a box-office bomb docked in Genoa.

A marvel of Byzantine engineering under the streets of Istanbul.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Architectureal fantasy quarter of Rome.

Ancient ruins hidden underneath a modern luxury hotel.