Guided tours of Palazzo Vecchio allow you to visit a series of particularly precious rooms, including the staircase built at the behest of Gualtieri di Brienne and carved into the thickness of the wall, the Studiolo di Francesco I de’ Medici, a refined treasure chest “of rare and precious things”, the Scrittoio of his father Cosimo I (better known as the “Tesoretto”), and finally the imposing truss structure that supports the coffered ceiling of the Salone dei Cinquecento.