This unique architectural wonder is also tied to one of the 20th-century's most renowned writers.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

The world's oldest bookshop still in operation.

A distinctive former power plant turned university lecture hall looks like it could make you breakfast.

This Belgian palace was long the domain of priests and aristocrats but is now being turned into an art commune.

This bakery and museum offers tours of the tastes and mythology of Aachen's signature spice biscuit—just don't ask for the recipe.

Centuries ago, red and white wine poured from the statue's breasts whenever a new Venetian ruler was elected.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

According to tradition this is the oldest church in Venice, but its actual age is a mystery.

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

The home of a neoclassical master is now a shrine to his chosen art style.

Stuck in the arcade of Casa Isolani are three arrows of mysterious origins.

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

This beautiful 150-year-old synagogue survived Italy's fascist period and the Second World War.

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

This ultra-modern burial building would have stacked the dead like a giant filing cabinet.

Hundreds of Roman amphorae are stored in an ususpecting underground parking lot.

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.

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

This zoological museum began as the first great curiosity cabinet.

An extraordinary collection of 18th century anatomical waxworks.