This fortress palace, with its crenellations and 94m-high tower, was designed by Arnolfo di Cambio between 1298 and 1314 for the signoria (city government). Today it is home to the mayor's office and the municipal council. From the top of the Torre d'Arnolfo (tower), you can revel in unforgettable views. Inside, Michelangelo's Genio della Vittoria (Genius of Victory) sculpture graces the Salone dei Cinquecento, a magnificent painted hall created for the city's 15th-century ruling Consiglio dei Cinquecento (Council of 500).