The 15th-century triple-arched balcony Loggia dei Mercanzia, where merchants used to plot deals, is worth a visit. From here, strike east along Banchi di Sotto to pass Palazzo Piccolomini, a Renaissance palazzo housing the city's archives. Further east are the 13th-century Basilica di Santa Maria dei Servi, with frescoes by Pietro Lorenzetti in a chapel off the north transept, and the 14th-century Porta Romana.
