The Archaeological Museum of Prehistory and Protohistory is part of the archaeological section of the Civic Museums of the Castello Sforzesco. Its official birth dates back to the first donations of the nineteenth century with the Royal Decree of 13 November 1862 which sanctioned the establishment in Milan, in Santa Maria di Brera, of the Museo Patrio di Archeologia. The headquarters of Brera soon proved insufficient in 1900 and the collections were soon moved to the new Civic Museum located in the Castello Sforzesco. In those same years the collections were increased thanks to numerous donations. An important collection of finds from Prehistory to the Paleolithic is owed to Pompeo Castelfranco, a great scholar of Lombard archeology. The artifacts come both from excavations and from exchanges with Italian and foreign scholars and collectors. Since 2003 the finds have been moved to the underground rooms of the Ducal Court, where they are currently located.