Galileo Galilei, together with some pupils in Piazza San Marco in Venice, trying out the first lenses used in the construction of his telescrope. Tempera on plaster by Luigi Catani, 1816 (Palazzo Pitti, Firenze, Quartiere Borbonico o Nuovo Palatino, sala 15).
© Palazzo Pitti, Firenze / Renato Idra