My wife and I are looking for a full day wine tour (preferably 3 wineries) to Montalcino or Montepulciano (but willing to consider San Gimignano or Chianti). We do not need the tour to be private, we will gladly travel with other wine lovers, especially if it means the per-person price is lower. The tour can include lunch or we can do lunch on our own. Most of the tours I can find look like they depart from Florence. Do you have any recommendations for tours departing from Siena?