Siena rewards pet travellers with its UNESCO World Heritage walled medieval centre (53 000 residents, 5 million visitors a year), the shell-shaped Piazza del Campo with the 102 m Torre del Mangia, the white-and-black marble striped Duomo Cathedral with the Piccolomini Library frescoes, the 14th-century Palazzo Pubblico, the 17 historic contrade neighborhoods that compete in the Palio horse race on 2 July and 16 August, the Fortezza Medicea 1.2 km panoramic rampart loop, the Orto de' Pecci medieval valley garden in the hollow below the Campo, the Via Francigena pilgrim route passing through Porta Camollia and Porta Romana, the surrounding Crete Senesi rolling hills for hiking, the Trenitalia regional Florence-Siena that uniquely accepts muzzled dogs at half-fare, and the traditional Tuscan pici pasta, Cinta Senese salumi, Pecorino di Pienza, panforte and Chianti Colli Senesi wines.