The tomb of the mythological founder of Padua is not hidden in some obscure crypt, but stands right in the middle of the city square.

Something's missing between the arcades of the Palazzo della Ragione in "the city of the three withouts."

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

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

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

Once known for its horse-powered knife sharpening, this 200-year-old shop offers an array of blades and hard-to-find culinary tools.

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.

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.

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

Stone memorial that's said to predict the death of the pope and the site of the Cadaver Synod.

A Nesting Doll of Churches.

A fortified medieval basilica on the Caelian Hill preserves extraordinary frescoes and one of Rome's most beautiful hidden cloisters.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

The museum houses one of the world's largest shoe collections, boasting over 12,000 pairs.

One of the largest ochre quarries in the world, hidden in a limestone landscape.

From carts to cars, this leftover Roman bridge in France has managed to survive for centuries.

The castle where the Marquis de Sade lived out his darkest fantasies.

These medieval ruins have survived since the 12th century, even providing shelter from the Nazis.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

From here, the loch appears to take the shape of mainland Scotland.

Largest lake in Great Britain measured by surface area.

Nestled amid the peaks and lochs of the Scottish Highlands, this inn and pub has played host to outlaws and ghosts.

A close look reveals that the Scottish monument is just slightly off-kilter.