"The prettiest love letters in the world" ... or so said Lord Byron.

A Milanese café entirely designed by the American director Wes Anderson.

100 year tradition of fist fights, marked by marble footsteps.

Hanging within this medieval church are the bones of a beast allegedly slain by a fourth-century saint.

A sinister pyramid in the Frari contains the heart of the famous neoclassical sculptor.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Venice's "Island of the Mad."

Inside this museum, Christians were imprisoned when the Romans controlled Gaul.

Lyon's miniature version of the Eiffel Tower was built as a statement in support of French secularism.

This abandoned church in central Lyon is missing its front stairs.

Antique cinematography artifacts fill this museum dedicated to the inventors of the moving picture.

This hidden garden boasts amazing views of Lyon.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

Hundreds of hidden passageways weave through the old quarters of Lyon.

Germany's Glienicke Bridge has a shady history of clandestine meetings, espionage, and spycraft.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

Berlin's oldest surviving academic architecture hosted decades of animal dissections.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Occupied for six centuries by Franciscan Order nuns, this monastery is an amazing ode to Catalán Gothic architecture.

One of Antoni Gaudí's least-visited works, an homage to Catalan patrimony that mixes neo-Gothic with Modernista forms.

Mountain where Jesus was first tempted by the Devil.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.