Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Breathtaking and huge 430 year old maps of Italy.

This former Roman Catholic Church still contains the embalmed hearts and organs of 22 popes.

A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

A fascinating assortment of cave dwellings, medieval ruins, and sarcophagi are being devoured by the forest.

The final resting place of the great navigator, or maybe his brother.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

The remains of the second-oldest zoo in Europe can be seen within these library gardens.

The mysterious large white cross visible from the runway is a memorial to a massacre during Spanish Civil War.

For over 300 years this little carving has been the city’s good luck charm.

Historic medieval fortified city in southwest France.

One of the most powerful religious centers in the Middle Ages, dubbed the founder of Western monasticism.

Monsters and miniatures are held in equal esteem at this wondrous museum.

For hundreds of years, automatons moving to metallic music have been marking the passage of time.

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

Wall after wall of this French seaside neighborhood is intricately decorated with seashells and corals.

A medieval church with largest and oldest collection of Renaissance frescoes in France.

The world's largest reflecting pool is just two centimeters deep.

This church sits upon a peaceful hill and a long, turbulent history.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.