The walk begins in Piazza Cavour and the contiguous Piazza Garibaldi, which mark the historical centre of the town.
The octagonal fountain (1890) at the intersection of the two piazze (illustrated above) was designed and built by Garibaldo Mancini. It replaced the well that Pope Alexander VI commissioned in 1489-92,, which had dried up by 1857. The remains of the earlier well, which was some 22 meters deep, were recently rediscovered under the piazza: plans are underway (July 2009) to incorporate the excavated area into the Museo Civico.
✴The church of San Crispolto (illustrated above) is on the far side of Piazza Garibaldi.