Geothermal waterfalls in Tuscany.

This delightful little museum is dedicated to only one thing: pasta.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

Two stone columns flank the grand Venice square, but there were supposed to be three.

A sinister pyramid in the Frari contains the heart of the famous neoclassical sculptor.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Architectural monsters are devouring this palace's every door and window.

Hidden in an Italian forest is a completely homemade amusement park that has taken a lifetime to create.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Pompeii's less famous neighbor is still revealing her secrets.

Renaissance villa and gardens complete with a tormented colossus.

The abandoned ruins of a failed resort hide on this verdant, picture-perfect island.

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

The ruins of this medieval castle now stand as a monument against all wars.

This 50-foot-deep sinkhole created in the 14th century is home to rare plants and fungi.

This unique building in the main square stands out among the city's typically Baroque architecture.

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

This spectacular dome managed to survive after being bombed in World War II, in an event known as the "Miracle of Mosta."

This almost-forgotten underground dungeon housed several convicts over the years, including Caravaggio.

These lesser-known Maltese catacombs date back over 1,700 years.

This church carved into the rocks is full of enchanting stone statues.

This prison on the Maltese island of Gozo is almost 500 years old, and they have the graffiti to prove it.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

The fishing boats that moor in this small lagoon enter and leave through a tunnel to the sea.