High Quality Content by WIKIPEDIA articles! Leonardo is a British children`s television series broadcast on CBBC. The show is an adventure programme featuring a teenage Leonardo Da Vinci starring Jonathan Bailey. The series is set in 15th-century Florence. A second series premiered on CBBC on 20 September 2012, starting with episodes one and two being shown back to back. For Series 2 actor James Clyde replaced Alistair McGowan in the role of Piero de` Medici.