By train
By train

From the central station of Florence you can easily reach most places in Tuscany, including:

Siena 1.5 to 2 hours

Pisa 1 to 1.5 hours

San Gimignano by train to Poggibonsi, 1 hour ride, and then a bus that runs every 30-40 minutes, 25 minute ride

Volterra also reachable by bus from Poggibonsi