Genoa's collection of over 4 million zoological, botanical, and geological specimens from around the world.

Destroyed numerous times, this centuries-old bridge has always been rebuilt with its original design.

The hermit's humble home is hidden near the forested peak of Monte Marrone.

An abandoned village that resides along the mountains of the Aosta Valley.

An abandoned village, frozen in time by the threat of a landslide.

Hidden within this iconic mountain are a set of World War II bunkers once used by German forces.

An eerie gravel road full of shards of red bricks leads to the ruins of a deserted factory.

An ancient Roman temple first dedicated to an emperor's wife is now a church.

This clifftop arch is a natural stunner.

Also known as the Temple of Poseidon, this is one of the best-preserved Greek temples in the world.

Ever loyal to Roma, the small village of Albe in the Abruzzo region carried on until an earthquake did it in.

A 17th-century doorway in a small Sabine village is a portal into the mysteries of alchemy.

The ruins of this Roman temple dominate the small city in southern Lazio.

This Roman underground canal was the longest tunnel ever built until the late 19th-century.

This Torino museum honors a soldier who kept the city safe using barrels of exploding gunpowder, losing his life in the process.

This lesser-known leaning tower is all that remains of the medieval castle of Vernazzano.

This hydrochronometer was invented by a Dominican monk and is a prime feature in this garden.

A series of caves, tunnels, and wells filled with fascinating figures and symbols.

One of ancient Etruria's most spectacular archaeological sites with impressive necropolises and rugged landscape.

Claude Monet immortalized this medieval bridge in two of his paintings.

A room filled with frescos that make it seem like the walls are crumbling down while giants die in despair.

This enormous sinkhole hides a secret world created from divine wrath.

These artificial caves crafted by ancient Romans were elaborate fish farms for moray eels.

A single column facing the sea is all that's left of one of the most important temples of Magna Graecia.