We are planning some day trips from Lucca in July. We already plan to spend some time in San Gimignano. How different is Volterra compared to San Gimignano? We are considering another day trip to either Barga or Volterra, however, if Volterra area is similar to San Gimignano, we might choose to visit Barga instead. What do you think of Volterra v. Barga v. San Gimignano?