I asked this over on Thorn Tree, but thought I should poll y'all as well. In October, I'm planning on picking up a rental car in Florence (Yes, int'l drivers permit and ZTL, ho capito) and then driving down to my next stop in the Maremma (way southern Tuscany) about halfway between the coast and Lago di Bolsena, and looking for thoughts on what to see on the way down. (Not that I need to decide right now, but I'd like to be able to stop thinking about it and move the brain on to other things).
Limits: I'm already planning on a day from where I'm staying near Montemerano to go to the Tufa cities and maybe Tuscania and probably Tarquinia (thanks Zoe for the trip report!) on the way down to Rome where I dump the car. Will have been to Volterra and San Gimignano isn't a priority. And I'll probably have gone through Chianti on a bus from Florence and won't be drinking and driving anyway, so wine stops are out (sad face). Walking and hiking are good though.
So here are the options for places to stop that might be good and looking to see what people really enjoyed or see if I've missed something that doesn't show up in the guides: drive through Crete Senese for the view, Murlo, Sant'Antimo abbey (which I've seen a lot of on this sight, but it'll be Sunday and timing will be an issue), Bagni San Filippo, San Galgano abbey, Santa Fiora. Obviously can't do all of this in one day (because of those speed limit cameras) and weather may play a part in limiting the stops, but thoughts are greatly appreciated. Grazie!