This Neapolitan exhibition hall grants weird and wonderful insight into the intricacies of human biology.

People have been living in the cave houses on this Italian hillside since the Neolithic era.

A dead saint, a deadly poison, and a mysterious holy ooze.

A former Roman town that was once the home of Scipio Africanus.

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

These "anatomical machines" are only one of the many strange items in this Italian crypt.

Skulls from the plague of 1656 and World War II bombings are united by a cult dedicated to caring for the ancient dead.

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

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

The roof of this ancient mausoleum is made from a single Istrian stone weighing a massive 230 tons.

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

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

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

Filled with goldfish swimming in a shallow pool of sea water, this ancient crypt is more wishing well than burial site.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

A verdant 17th-century-style garden hidden along Edinburgh’s Royal Mile.

The most loyal of little dogs, or a Victorian era publicity stunt?

A library where thousands of books explain how to avoid another Great Recession.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

This hidden gem reveals the history of Britain's first police force.

Displaced highlanders would take shelter from the wet Scottish climate under the large walled bridge at Glasgow Central Station.

A 200-year-old collection of oddities and medical paraphernalia.

Hidden on a cobblestone street in Glasgow, a Czech Cajovna-inspired teahouse serves as a hangout for Bohemians.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.