Italian director Pier Paolo Pasolini fell in love with this lonely 13th-century tower while making his most famous film.

This hermitage celebrates the legend of Emperor Constantine's healing from leprosy.

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

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

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

South of Bologna, a limestone grotto with a protruding waterfall and a floor full of cave pearls.

The marshy karst plain has reclaimed this beautiful 17th-century church.

Templar knights fleeing persecution are said to have left this sword in stone as a landmark in 1307.

The only substantial part of Nazi Germany's formidable defensive line through Northern Italy that survives today, largely intact.

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.

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

One of the oldest and most significant collections of Ancient Egyptian archeology outside of Egypt.

A long-buried ancient ruin unearthed right in the middle of the city.

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

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

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

This amazing medieval fortress stands atop a promontory along the famous Cinque Terre.

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

This sturdy, circular stronghold served as one of the forts that protected the Venetian Lagoon.

A 2,000-year-old engineering wonder hides beneath an Italian town.

A massive bridge forms part of an aqueduct that was deemed an architectural wonder of its time.

The underground sanctuary of a mysterious ancient Roman religious cult contains an exquisite traditional fresco.

Known as the Royal Palace of the Euganean Hills, this often overlooked castle has been home for multiple noble families over the centuries.