Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

Go inside to really appreciate this 500-year-old technological masterpiece.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

Some say this medieval church is where the poet Dante married his wife and also met the love of his life.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

Legend says this mysterious stone head belongs to a woman who was petrified by an alchemist.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

This beautiful medieval Serbian monastery is home to frescoes, peculiar sculptures, and historical curiosities.

A cheeky reminder about the value of art dangles above one of Olomouc's busiest streets.

An eerie reminder to the horrors of World War II.

A geological wonder that helped fuel myths of trolls and giants.

Remnants of the Roman empire's northern frontier nestled in suburban Glasgow.

These ancient rune stones plucked from the countryside now call this university park home.

These unknown Bronze Age earthworks are believed to be ancient burial mounds.

These Bronze Age rock carvings are among the oldest in the region.

This town is home to the world’s largest arch constructed entirely of elk antlers.

This 400-year-old house tells a tale of witchcraft and woodwork.

Chester Cathedral is home to a unique painting crafted on a canvas of cobwebs.

This castle was once the home of one of the most powerful women of the Renaissance.

Templar knights fleeing persecution are said to have left this sword in stone as a landmark in 1307.

A forgotten "city of water" underneath the famous Trevi district.

Inky sludge oozes to the surface of this beach thanks to a rare natural tar seep.

You can still find treasures on the pebbly beaches of one of the world's oldest jade-producing areas.

An enormous roadside pan tells the story of a battle for pie glory.