We will be visiting Italy in May and are driving from Rome to Siena. We are looking for a place to stop along the way and are looking for suggestions. I've seen Orvieto, Perugia, and Montepulciano all suggested. Are there one or two that stand out as 'must-see' places? We'll be wine tasting in Siena so are looking for places to stop with interesting history and or other things to see.
Thank you!