Le val d'Orcia est une vaste vallée située dans la province de Sienne, en Toscane, au nord-est du mont Amiata et voisine de l'Ombrie, traversée par la rivière Orcia qui lui donne son nom. Son paysage emblématique de la Toscane, marqué d'argile et du tuf (collines argilo-sableuses du Pliocène), est visible partout sur les cartes postales, les photographies ainsi que celles de ses villages médiévaux comme Pienza et Montalcino.
Tuscany (Italian: Toscana, pronounced [tosˈkaːna]) is a region in central Italy with an area of about 23,000 square kilometres (8,900 sq mi) and a population of about 3.8 million inhabitants. The regional capital is Florence (Firenze).
Tuscany is known for its landscapes, traditions, history, artistic legacy and its influence on high culture. It is regarded as the birthplace of the Renaissance and has been home to many figures influential in the history of art and science, and contain well-known museums such as the Uffizi and the Pitti Palace. Tuscany produces wines, including Chianti, Vino Nobile di Montepulciano, Morellino di Scansano and Brunello di Montalcino. Having a strong linguistic and cultural identity, it is sometimes considered "a nation within a nation". Seven Tuscan localities have been designated World Heritage Sites: the historic centre of Florence (1982); the historical centre of Siena (1995); the square of the Cathedral of Pisa (1987); the historical centre of San Gimignano (1990); the historical centre of Pienza (1996); the Val d'Orcia (2004), and Medici Villas and Gardens (2013). Tuscany has over 120 protected nature reserves, making Tuscany and its capital Florence popular tourist destinations that attract millions of tourists every year. (In 2007, the city became the world's 46th most visited city, with over 1.715 million arrivals).