
The Crete Senesi refers to an area of the Italian region of Tuscany immediately to the south of Siena. It consists of a range of hills and woods among villages and includes the comuni of Asciano, Buonconvento, Monteroni d'Arbia, Rapolano Terme and San Giovanni d'Asso, all within the province of Siena. They border to the north with the Chianti Senese area, to the east with Val di Chiana and to the south-west with Val d'Orcia. Nearby is also the semi-arid area known as the Accona Desert.

Asciano is a comune and hill town in the province of Siena in the Italian region Tuscany. It is located at the centre of the Crete senesi between the river Ombrone and the torrent Copra, some 30 kilometres (19 mi) southeast of the town of Siena by rail.

Buonconvento is a comune (municipality) in the Province of Siena in the Italian region Tuscany, located about 70 kilometres (43 mi) south of Florence and about 25 kilometres (16 mi) southeast of Siena in the area known as the Crete Senesi.

The Abbey of Monte Oliveto Maggiore is a large Benedictine monastery in the Italian region of Tuscany, 10 km south of Asciano. Its buildings, which are mostly of red brick, are conspicuous against the grey clayey and sandy soil—the Crete senesi which give this area of Tuscany its name.

Monteroni d'Arbia is a comune (municipality) in the Province of Siena in the Italian region Tuscany, located about 60 kilometres (37 mi) south of Florence and about 13 kilometres (8 mi) southeast of Siena in the area known as the Crete Senesi. It takes its names from the Arbia torrent, a tributary of the Ombrone River.
Rapolano Terme is a comune (municipality) in the Province of Siena in the Italian region Tuscany, located about 60 kilometres (37 mi) southeast of Florence and about 20 kilometres (12 mi) east of Siena in the area known as the Crete Senesi.

San Giovanni d’Asso is a frazione of the comune of Montalcino, province of Siena, Italy. It is located about 80 kilometres (50 mi) southeast of Florence and about 30 kilometres (19 mi) southeast of Siena in the area known as the Crete Senesi.