This mysterious ancient arch is hidden in the forest of Simbruini Mountains Regional Park.

This building features dozens of faces along its facade, although one is a bit chilling.

Only three columns survive from this ancient temple in the town of Cori.

Tourists to the mountaintop Sicilian town often overlook its ancient fortifications.

The tomb of the mythological founder of Padua is not hidden in some obscure crypt, but stands right in the middle of the city square.

This deconsecrated church has seen many uses, from a tobacco storehouse to a cinema.

A colossal aqueduct from the second century B.C., deeply hidden in a gorge on the outskirts of Rome.

A cone-shaped top and cylindrical body set this 900-year-old structure apart from other Italian bell towers.

Famous landmarks and structures from across Italy fill this miniature park.

Legend has it that any woman who kissed this statue would soon be married.

Also known as the Temple of Poseidon, this is one of the best-preserved Greek temples in the world.

The ruins of this Roman temple dominate the small city in southern Lazio.

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

A beautiful chapel on the hills of the Oltrepò Pavese claims to house the tomb of King Edward II of England.

A small Byzantine church lost in the middle of the mountains of southern Italy.

This medieval mountain town is also known as the "Village of Streams."

Featuring the last fully walkable parapet walkway in Europe.

This curious, round temple is the oldest still-standing marble building in Rome.

This small, ancient Roman temple was once a church dedicated to the patron saint of penitents.

A military museum, art park, mausoleum, and architectural oddity all on one fascist's estate.

Remnants of cone-shaped fascist bomb shelters in Milan.

Buried next to Pompeii, this lesser-known Roman villa was the opulent vacation home of Emperor Nero's wife.

Behind medieval walls in a corner of bustling Palermo is a breathtaking former mosque once inhabited by a wolf-taming hermit.

This large, circular tomb is the final resting place of the first emperor of Rome.