Close to Graglia winery are several important protected areas.

The Park of Turin hills has two:

Vaj Forest Special Natural Reserve and the natural Park of Superga Hill
http://www.parks.it/parco.collina.torinese/
Tel. +39 011-912462

The natural parks in Rocchetta Tanaro, Valleandona-Vallebotto, Val Sarmassa
http://www.parks.it/parchi.astigiani/

More at thisĀ links:

La Cabalesta – Tourism and culture in our Region

La Provincia di Asti – Asti Province official website

Parks.it – Italian natural parks portal

Douja d’Or – National D.O.C. e a D.O.C.G. wines contest

Vinitaly – International wine exhibit

Wine Tourism Movement association website