To visit Siena, San Gimignano, Greve in Chianti, Monteriggioni, Pienza, Volterra, Barberino, and other beautiful historical Tuscan towns by bus, visit sitabus information and for less than 8 euros go by bus to the one of the most wonderful places in the world.
Sita Bus Autostation is located next to Santa Maria Novella Train Station in Via Santa Caterina da Siena, 15/17.
Every 30 minutes you can find a bus to take you directly to your destination, round trip. ( remember to ask for the bus express to go straight to your destination)
With this option if you don't have a car, you can visit Tuscany in one day and use the most ecological way to travel.
For schedule and more information, visit the website here.