Destroyed numerous times, this centuries-old bridge has always been rebuilt with its original design.

The 1940s structure houses what was once Europe's largest telescope.

Machismo turned on its head: the lady's hand goes to the dude with the bigger brain.

Featuring the last fully walkable parapet walkway in Europe.

This old medieval prison tower has been a site of astronomical research for more than 250 years.

The people of Padua pledged to construct this church if the city was spared from destruction during World War I.

A sudden, striking cluster of hills south of Padua has been attracting visitors for centuries.

The origins of a large, medieval castle are shrouded in mystery, but now it's a delightful garden.

A medieval castle was used for centuries as a hemp farm.

One of the tallest bell towers in Italy plays a particular melody at just two times each day.

Atop the former site of a historic bakery sit two stone tributes to Verona's contribution to traditional Italian baking.

This cathedral hides a sculpted dog that determines your fate and an unexploded shell from World War II.

Massive galleon from a box-office bomb docked in Genoa.

Once home to one of the oldest banks in the world, this building is also where Marco Polo's famous travelogue was written.

An underground network of massive stone arches and their skylit vaults support ruins of portico structures above.

This arch granting triumphal entrance into Antalya was designed to honor the emperor's visit.

A strange aquarium with stuffed fish, and almost no water for them to swim in.

Standing atop 2nd-century Roman ruins, this church is one of the oldest and most iconic in Old Cairo.

The medieval center of the Islamic world was also once the seat of Saladin's sultanate.

Located near Cairo's El Korba district, the abandoned mansion continues to inspire mystery and rumor throughout the city.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

The unexpectedly beloved remnants of a controversial thermal power plant.

The world's first electric battery-powered submarine.