The roof of this ancient mausoleum is made from a single Istrian stone weighing a massive 230 tons.

A haunting collection of sunken wooden barges litters this Italian river bend.

A gorgeous example of 13th-century Gothic architecture.

A striped 12th-century basilica sits in the countryside of Sardinia.

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

These elaborate gothic monuments honor Verona's medieval lords.

A schoolhouse and chapel are all that remains of this alpine village.

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

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

The city of Parma's cathedral is home to one of the greatest illusionistic frescoes of the Renaissance.

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

The remains of this medieval Roman road and lookout towers dot the rugged coastline of southern Lazio.

These caves are home to a small church and were used to age cheese.

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

A wood-and-steel sculpture garden featuring an artful interplay of nature and machinery.

It took more than 300 years to build this church, which is home to two sacred vessels believed to hold the blood of Christ.

A map of Italy made entirely of trees.

This constantly evolving art space saved an Italian town from its own crippling reputation.

Legend said this huge, gnarled tree sheltered the saint during a storm.

This 18th-century dissection theater's frescoes display a gorgeous tension between the terrestrial and esoteric.

A massive mausoleum towers over the gravestones in a 19th-century Italian "model village."

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

A medieval, mosaic-lined baptistry built by a heretical Christian sect.

The 1,000-year-old abbey is the birthplace of modern musical notation.