One of the earliest depictions of an Arthurian scene that is shrouded in mystery.

This beautiful 150-year-old synagogue survived Italy's fascist period and the Second World War.

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

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

A diverse collection of wax, bone, papier-maché and mummified relics.

A large statue of Pope Gregory XIII in Bologna was disguised as Saint Petronius to avoid destruction.

A massive line that stretches across the floor of Bologna’s largest church was created by a 17th-century scientist to measure the movements of the Sun.

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

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

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

This giant slab of driftwood marks the beginning of the Winnemucca to the Sea Highway.

When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

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

This pedestrian bridge in Croatia is a sleek, ship-inspired design with a fun net and social spaces.

A World War II evacuation tunnel turned into a history display of Croatian state and people.

A well-worshipped shrine to the Virgin Mary nestled inside the last of Zagreb’s historic gates.

This 135-year-old weather station studied the effects of the climate on human health.

Buy raw milk from a 24/7 vending machine or pick up tomb candles at this local market.

This one-time health resort was used by aristocrats around the world.

Strange rumors surround the artist who created these solemn metal guard dogs.

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

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

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