Italy's third-largest Roman arena gives a peek into the underground operations beneath the ancient spectacles.

An extraordinary house museum and cabinet of curiosities in the heart of Florence.

A medieval Italian village is fighting depopulation with this vibrant annual street art festival.

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

This gallery commissioned by Cardinal Spada is known for its magnificent optical illusion.

This peculiar Italian elevator runs both horizontally and vertically.

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

An 18th century fountain and two columns are all that remains of Rome's forgotten river harbor.

A map of Italy made entirely of trees.

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

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

When this funny little building went up in the 19th century, most people thought it would simply fall over.

A medieval stronghold rising over the ruins of ancient Roman villas along Rome's southern coast.

A rather vulgar example of the transition from Latin to the Italian vernacular.

An abandoned bell tower in the middle of nowhere is the last testimony of a forgotten medieval village.

A popular legend claims that the famous pizza was invented at a restaurant in this alley.

This skeletal, unfinished Gothic church once housed a miraculous masterpiece by Raphael.

The Bourbon royal family had this unique octagonal hunting "cottage" built on a tiny islet in Lake Fusaro.

One Italian taxi driver covered his entire house in small seashells creating a weird bit of architecture that is preserved to this day.

The remains of an ancient Roman city are hidden underneath Bologna's beautiful public library.

Just saying the name of this town out loud is said to bring bad luck.

This cliff-face port is considered a masterpiece of mining engineering.

This one-of-a-kind archeological site is home to strange prehistoric ruins, the original use of which is still a mystery.

This scenic fortress dates back at least 2,400 years to the time of Magna Graecia.