On the border of the Charollais region, at the foot of Mont Saint-Vincent, the commune of Collonge-en-Charollais offers large areas of unspoiled nature and 417 hectares of forest (70% of the communal territory), ideal for hiking. The GR7 crosses the crest of the commune from northwest to southeast. There are two Balade Verte routes that allow you to discover Collonges-en-Charollais: "La Mer de Pierre" (The Sea of Stone), a geological curiosity made up of a pile of sandstone that makes one think of a motionless sea, and "le Sentier de la Résistance" (the Path of the Resistance), a route
that was used by resistance fighters who set up their camp in Portus, called the "camp des loups" (the wolves camp) during the Second World War, one of the most important French resistance groups in 1942. A commemorative monument, "the monument of Maranges", built in 1946 in homage to the 7 resistance fighters killed by the occupying forces during the Second World War is not to be missed. The church of Saint-Etienne-de-Collonge is worth a visit to see, among other things, a stained glass window and a 15th century lapidary cartouche. You can also see an old tower dating from the 16th century, the keep of Montvoisin, the wash house at the lower end of Collonge and the Anses mill.