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

One of the earliest depictions of an Arthurian scene that is shrouded in mystery.

The city of Parma's cathedral is home to one of the greatest illusionistic frescoes of the Renaissance.

An ancient theatre in the "little Rome of the Alps."

This sinister Baroque entryway could lead you to a terrible fate.

The intricate geometry inside this Baroque-style dome was designed to create "terror of the human soul."

This building has a giant piercing through one of its corners.

This fountain is dedicated to the workers who perished constructing the Fréjus Rail Tunnel.

This building was designed to celebrate Italy's victory in World War I.

This Art Nouveau mansion was used as the "House of the Screaming Child" in Dario Argento’s giallo classic.

The mountaintop inspiration for Umberto Eco's "The Name of the Rose."

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

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

This saucy statue once caused outrage among locals.

An Orthodox church built by the Royal Family for the Russian community exiled to the French Riviera.

A reconstruction of a classic mansion on the island of Delos was designed for a historian and archaeologist.

This small, easily-overlooked sculpture recalls the first time Graz saw a live elephant.

This small museum celebrates the father of modern skiing, as well as Norway's other notable contributions to skiing.

Legend holds that this knife serves as a chilling reminder of the deadly rivalry between two local builder brothers.

This compact temple is filled with garlands of colorful balls that represent restrained monkeys.

This often-missed monastery, set in a scenic mountain landscape, features unique frescoes, fortifications and legends.

Step inside this medieval Orthodox gem and travel back to the 16th century.

This fifth-century church is one of the oldest Christian sites in the Balkans.

Construction of this bridge was once described as an "act of violence" against a neighboring country.