According to the legend, this structure was built in a single night with the help of the devil.

A collection of grotesques lines the walls of this Italian villa.

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

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

This small but lovely sinkhole lake is the last remnant of a great prehistoric water basin.

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

Though an earthquake destroyed this village in 1980, one former resident still walks its streets every day.

An Italian hillside ghost town.

The oldest-known example of a historic architectural style recognized by UNESCO.

The sunlight passing through the opening of this huge cave system creates a magical effect.

South of Bologna, a limestone grotto with a protruding waterfall and a floor full of cave pearls.

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

Roman politician Herodes Atticus built this nymphaeum to honor his wife, whom he may have murdered.

This monastery built into a cliff hides a perfectly preserved hermit in a glass coffin.

A magnificent Neogothic tomb hides within this Italian fairytale-like forest.

Amalfi's pre-industrial history is slowly being engulfed by the lush vegetation of the Ferriere Valley.

A fascinating assortment of cave dwellings, medieval ruins, and sarcophagi are being devoured by the forest.

An Italian geologic wonder that served as the inspiration for the landscape of Dante's hell.

This ancient trail climbs the mountain where a Latin League cult worshipped Jupiter, its main deity.

Crumbling ruins of the thermal baths that once attracted royals and aristocrats from throughout Europe.

An open-air museum in a mountain valley features works designed to blend in with—and disintegrate back into—their natural surroundings.

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

Beautiful views and Roman-style statues on the Italian coast.

The first Russian Orthodox church in the Catholic city of Rome in almost a thousand years.