A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

Inspired by the Rialto Bridge in Venice, these three clustered bridges were just one part of a Slovenian architect’s grand vision.

A whimsical bridge adorned with decorative dragons.

Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.

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

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

A striking memorial recalls thousands of Bolognese men and women killed fighting fascists in World War II.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

Time has been frozen at this station since the bombing in 1980—or so it was believed.

Windblown rock formations in an ancient Roman quarry.

Mysterious tombstones thought to be remnants of Atlantis.

This weird, elephant-shaped rock also hosts two ancient tombs.

A striped 12th-century basilica sits in the countryside of Sardinia.

Stalactites and stalagmites in a beautifully lit cave.

A Nuragic tomb, a Roman tomb, and a Byzantine Church, all hidden inside a rock.

This massive and complex stone tower is a great example of the many pre-historic nuraghes on the island.

This elaborate hole in the ground was built as a sacred site for an ancient civilization.

The titular "little arch" near this Italian resort is one of the most popular diving spots in the country.

This isolated village has Hollywood fame and a church with underground structures that date to the pre-Christian period.

This mysterious Sardinian festival sees a horde of blank-faced equestrians compete for tin stars.

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.