Ideally, they form a hilly arc around the city of Chieri, stretching from the hill of Superga to Moncucco Torinese and Riva near Chieri. Geologically, the hill system took shape during the Messinian stage but underwent profound changes due to the action and diversion of the prehistoric Po River. The soils are predominantly composed of clay marls with the presence of siliceous sands, limestone, and iron oxides, giving the wines a vibrant character, excellent freshness, and good structure. Traditionally, the hills of Chieri have always been considered the green lung of the metropolitan area of Turin, a favored destination for day trips, picnics, and good cuisine.

The Chieri area is the realm of Freisa, a distinctly native Piedmontese grape variety, highly versatile, with the first records of it dating back to the 16th century. Recognized under the Freisa di Chieri designation, it is vinified as dry, lively, or sparkling, preserving excellent acidity, natural softness, and delicate fruity aromas in the bottle.

Among the native grape varieties of the Turin hills, Cari stands out, cultivated in a handful of vineyards mostly in the municipality of Baldissero Torinese and nearby Chieri. Cari, highly demanding in terms of soil characteristics, was historically cultivated in specific portions of vineyards or even within individual rows of Freisa vines, where farmers identified the most suitable terrain. Even today, Collina Torinese Cari is the only DOC in Italy that requires registration of individual vines, rather than entire vineyards, in its registry. Belonging to the Pelaverga family, its production is extremely limited, not exceeding 8,000 bottles per year.