On map RL 12278 (Windsor Castle) and in Madrid Ms. II (f. 23r) Leonardo indicates the "Certosa" (Carthusian Monastery) di Galluzzo above Monte Santo (in the past, Monte Acuto), at the confluence of the Ema with the Greve.
This is one of the most important religious and artistic centres in the vicinity of Florence, founded in the 14th century at the initiative of Niccolò Acciaioli, who was also the Grand Seneschal of King Robert of Naples.
Appearing as an industrious citadel of faith, the Certosa contains various cloisters, halls, a refectory, the monks' cells, a pharmacy, a library and, since the 20th century, a picture gallery.
Here are found works by such artists as Pontormo, Ridolfo del Ghirlandaio, Lucas Cranach, Mariotto Albertinelli, Andrea and Giovanni Della Robbia, Francesco Granacci, and Benedetto da Maiano. In addition, there is the tomb of Leonardo Buonafé, Camarlingo of the Hospital of Santa Maria Nuova at the time of Leonardo, attributed to Francesco di Giuliano da Sangallo.