North of Loggia dei Mercanti on Banchi di Sopra, the 13th-century Palazzo Tolomei dominates Piazza Tolomei. Further north, Piazza Salimbeni is bounded by Palazzo Tantucci, Gothic Palazzo Salimbeni (prestigious head office of Monte dei Paschi di Siena bank), and the Renaissance Palazzo Spannocchi, from where 29 finely carved busts stare down at you from beneath the eaves.