In Aosta Valley there are areas of spontaneous flowering of peonies: the best-known area is the saddle of Col Fenêtre, above Perloz, less frequented but also interesting the territory between Issogne and Arnad.
These wild, autochthonous specimens are protected by a regional law that prohibits their collection.

The flowering of peonia officinalis reaches its peak from the end of the month of May to mid-June, the ideal time to discover these large bright red flowers, as well as to schedule rides along the paths through larches and beeches woods.

The mule track starting from Faye Dessous (1022 m) and passing through the villages of Pessé and Fenêtre until reaching the Col Fenêtre is a highly advisable course, either because of the aspects related to the nature, or to the rural architecture. Worthy of attention are the stone cross and the monumental ash tree located in the hamlet of Pessé, as well as the magnificent circular fountain carved into the stone in Fenêtre.