About thirty minutes away from the Castello is the walled city of Siena, a medieval city with hundreds of years of history. Enter the walled city by parking at the Parking Santa Caterina (address provided here), and take the escalators up to the city. Visit the Piazza del Campo as well as the Siena Cathedral.
The famous Chianti region is only about an hour away from the Castello, with many wonderful wineries to visit. Recommendations: Antinori nel Chianti Classico, Vignamaggio winery, Castello di Monterinaldi
An hour away from the Castello is the beautiful city of Florence, with hundreds of things to do and see, it is a must see for lovers of architecture, history, and food.
The castello also has a pool, tennis court, volleyball net, and ping pong table for those who want to have a relaxing day in a thousand year old castle.