The striking medieval city of Siena can be reached via the Autostrada from Lucca to Florence and then to Sienna within approximately 2 hours 30 mins from la Fucina. Sienna and the famous Chianti region can make an excellent day trip for visitors.

The historic centre of Siena has been declared by UNESCO a World Heritage Site. There are many sights to take in, including the cathederal (Duomo), the shell shaped Piazza del Campo, and the Academia Musicale Chigiana, Sienna's conservatory of music.

The Palio di Siena is a traditional medieval horse race run around the Piazza del Campo twice each year, on 2 July and 16 August. The event is attended by large crowds, and is widely televised. Seventeen Contrade (which are city neighbourhoods originally formed as battalions for the city's defence) vie for the trophy: a painted flag, or Palio bearing an image of the Blessed Virgin Mary. Ten of the seventeen run in each Palio: seven run by right (having not run in the previous year's corresponding Palio) together with three drawn by lot from the remaining ten. A horse is assigned to each by lot. Though often a brutal and dangerous competition for horse and rider alike, the city thrives on the pride this competition brings. This event is not without its controversy however, and recently, there have been complaints about the treatment of the horses and to the danger run by the riders. In order to better protect the horses, steps have been taken to make veterinary care more easily available during the main race. Also at the most dangerous corners of the course, cushions are used to help protect both the riders and horses.