The Piazza del Campo is undoubtedly the main square of Siena – this superb open square contains some simply stunning architecture and is always buzzing with local life and tourism.What makes this square so inviting are the curved lines of the buildings that provide an enclosed and friendly feeling.Notable buildings located on the square include the gigantic Torre del Mangia, the beautiful Palazzo Pubblico and the Fountain of Gaia.Many people start their tour of Siena from this very point and it also contains a range of cafes, restaurants and shops.The beautiful medieval architecture, lively atmosphere and interesting shape of the square make it a prime attraction.