This medieval city gate is now a blend of the past and the modern world.

The oldest volcanology research center in the world.

The Emperor Tiberius' palace of debauchery.

The glowing blue Nymphaeum of Emperor Tiberius.

One man's desire to transcend art led to the construction of this outsider chapel.

Balconies that have a most unusual accent.

Walk through a fairytale in Tuscany.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

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

The graveyard is filled with beautiful funerary art and boasts breathtaking views of Florence.

These gutted monastery ruins still stand proudly in the middle of the Italian countryside.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Now harmless, this looming post struck fear into the heart of medieval troublemakers.

Bell tower juts out from a village buried under a lake.

Europe’s oldest natural human mummy.

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.

When a massive landslide hit one of the world's tallest dams it created a tragic environmental disaster.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

A whimsical bridge adorned with decorative dragons.

With its mine closed, this old village is starting to resemble a ghost town.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

The lost Latin words were reconstructed using the holes from the nails that once pinned them in place.

This ancient theater was once the home of fierce gladiatorial battles.

These medieval ruins have survived since the 12th century, even providing shelter from the Nazis.