Pétanque (French boules) is played casually in Lyon parks and along the Saône. Watch or join — locals will lend you balls.
Berges du Rhône (Rhône banks) and Place Bellecour have summer pétanque pits.
Rules are simple: throw your balls (boules) closest to the small target ball (cochonnet). Get one of the locals to explain — they'll be delighted.