The old nucleus of Palazzo Aldini Sanguinetti is the result of numerous transformations made over the centuries. The medieval building was transformed by the Riario Sforza family in the 16th century, and at the end of the eighteenth century, the building went to Count Aldini, who completely restructured it in neoclassical style. Donated to the council in 1986, it now contains precious collections of books, old musical instruments and pictures that belonged to Father Giovanni Battista Martini, a great European musicologist of the second half of the 18th century. A calibrated layout, almost entirely in glass, makes the display compatible with reading of the monument: the automated showcases and the apparatuses are inserted in the decorative pauses in the interior scenography. Every room is illuminated with a single bright source that replaces the old chandeliers.