Watch Italy's Invisible Cities Season 1 Episode 3 Online

Using the latest 3D scanning technology, Alexander Armstrong and Dr Michael Scott explore the romantic city of Florence. They reveal how its wonderful facades and artworks mask a hidden story of intrigue and secrecy, and one powerful dynasty was behind it all - the Medicis, godfathers of the Renaissance. Finally, the scanning team build a virtual reality 3D model to reveal how the city's secret corridors of power were the foundation of the city's Renaissance glory.