The Uffizi brought together under one roof the administrative offices and the Archivio di Stato, the state archive. The project was intended to display prime art works of the Medici collections on the piano nobile; the plan was carried out by his son, Grand Duke Francesco I. He commissioned the architect Buontalenti to design the Tribuna degli Uffizi that would display a series of masterpieces in one room, including jewels; it became a highly influential attraction of a Grand Tour. The octagonal room was completed in 1584.[7]