Buisson is a commune in the Vaucluse department in the Provence-Alpes-Côte d'Azur region in southeastern France.Buisson is a small, wine-producing, Knights Templar village, dating back at least as far as the 12th century, and linked since its beginning to the nearby village of Villedieu, with which it produces its principal crop, Côtes-du-Rhône wine, which is sold from their joint winery, le Cellier du Templier.