The smaller of the three towers of San Marino is a former prison inaccessible from the ground level.

The only Shinto shrine in Europe that has been officially sanctioned by Japan.

Only the facade of this house was built so a father could fool his son.

Eighteen mummies have stood guard behind the altar of this tiny church since 1833.

This domed temple was built in a hidden cave mouth as a refuge for sinners seeking absolution.

The largest known wine barrel of the medieval era is visible from the street in Gubbio.

Fountain where visitors can earn a license to be mad.

The venerated body of a 12th century saint is celebrated each year with the 'Race of the Candles.'

The world's largest "Christmas tree" is illuminated by hundreds of lights stretching 2,000 feet up the slope of Mount Ingino.

This region of the Perugia municipality has an unforgettable name.

This 16th-century monastery has been turned into a surrealist architecture compound.

Water and windows define this defensive Italian well.

This picturesque Umbrian city has a subterranean side that has long remained hidden.

Nine caves filled with recently-discovered archaeological finds under the houses and the streets of the most ancient district of an old town.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

For two decades in the 13th century, the papacy operated from this palace in central Italy, which served as the site of the first—and longest—papal election conclave in history.

This fiberglass version of the Awakening sculpture by Seward Johnson, now resides in its third location in Italy, in Viterbo.

This war memorial commemorates some of the world's first paratroopers.

For centuries, this town's hot springs have been embraced by rich and poor—and even by Popes.

The leathery remains of a woman who died in the 13th century now lie in a church named for her.

This medieval Italian village was transformed into an architectural marvel by the famous "Papessa" Donna Olimpia.

The 16th-century son of Sienese nobility carved this hermitage out of volcanic rock.

This palatial building houses a remarkable gallery of papal portraits.

This caldera was once associated with the Etruscan god of the underworld.