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

A medieval, mosaic-lined baptistry built by a heretical Christian sect.

Numerous stone coffins from different centuries, lined up in a sixth century basilica.

This 6th-century church has the largest and best-preserved collection of Byzantine mosaics outside Constantinople.

Psychoanalyst Carl Jung reported a paranormal experience after visiting this mosaic-lined Roman baptistry.

An incredible mosaic-lined monument said to have held the remains of an ancient Roman empress.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

Tombs containing the remains of some of the first and most important professors of medieval Bologna

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.

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

A memorial to the deadliest terror attack during an unsettled period of Italy’s recent history.

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

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

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

This tree was grafted from the actual tree that led Isaac Newton to ponder the theory of gravity.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.

No one is sure what to do with this WWII shipwreck that sits at the bottom of the Thames, still loaded with tons of explosives.

These abandoned coal mine towers near Sherwood Forest might soon boast the U.K.’s longest zip-line.

The former home of a railway legend and the site of a gigantic labyrinth.

This enormous spiral sculpture looks strangely out of place on the edge of a housing development.

One of the town's most famous residents, holding one of his most famous creations.

A well preserved remnant of the English Civil War.

The final resting place of hundreds of Polish airmen who died fighting the Nazis in Britain.