Enigmatic tombs and cave dwellings on the outskirts of a rural village.

Geothermal waterfalls in Tuscany.

The Roman Emperor's lost summer home and grotto full of enormous sculptures sit along the Italian seashore.

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

A town saturated in Italian rationalist architecture was once marshland drained by Mussolini.

A 16th-century horror show built in a lovely Italian garden.

This immaculate and historic water garden culminates in a massive stone dining table with an inset fountain for chilling the wine of the Cardinal's guests.

Medieval town turned hippie commune, once home to the secret foreskin of Jesus Christ.

Rome's ancient Etruscan rival, now a park full of ruins.

Harlequin costumes, signed scripts, and armor-wearing puppets.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

The yawning maw of this pagan visage is said to bite off the hands of liars.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

This historic recreationist school churns out warriors that may very well have had a fighting chance in Rome's pits of the day.

An alchemist's "magic door" stands in the middle of a Roman park.

Jesus' footprints and the first catacombs in the world.

The U.S. Supreme Court's secret Cold War relocation facility in the mountains of North Carolina.

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