A left turn off Via Guarnacci as you head steeply down toward Porta Fiorentina takes you to a walkway atop the medieval ramparts overlooking the impressive remains of Volterra's Roman theater and baths. These are some of the best-preserved Roman remains in Tuscany, dating back to the 1st century B.C. The view from up here is the best way to see it all, but there's an entrance down on Viale Francesco Ferrucci if you want to wander among the stones.