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

A holy stone inside this spectacular hermitage is said to have healing properties.

This small hermitage on Mount Scalambra was built near what some believe is the miraculous imprint of Saint Benedict's hand.

This small hermitage is located along an ancient route that connected the Tiber and Rieti valleys.

This archaeological site built into a tuff outcrop is filled with rock dwellings, the ruins of a medieval castle, and a necropolis.

This beautiful Romanesque church preserves stunning medieval frescoes and the excavations of a Roman market town.

An unremarkable wooden wheel built into the side of one of Rome's oldest hospitals was part of a policy to reduce infant exposure.

The charred, dead skeleton of an oak tree is said to have consoled a dying 16th-century Italian poet.

A burial vault located under Tiber Island in the middle of the Italian capital.

The former home of an Italian artist is now a shrine to his ambitious works.

A modern sliver of architecture in Roma.

Jesus' footprints and the first catacombs in the world.

Hidden in a high mountain cave, this hermitage dates back to the ninth century.

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

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

Water and windows define this defensive Italian well.

Was this cave created by Hercules's wrath, the devil, or volcanic activity?

A wunderkammer of curious objects and intriguing art nestled within a hub of ancient Roman sites.

For nearly 2,000 years this church has been waging war on local snakes by importing cats.

A floating cat sanctuary on an Amsterdam canal.

A black cat protests the City Guild in Riga's Old Town.

Underneath this small church are 15,000 bones, arranged by an obsessive academic.

This mysterious and unique painting is filled with symbolism.

William Blake claimed to have painted this gothic masterpiece after encountering this nightmarish being in a vision.