That traboule (12, St Catherine street) leads from the Croix-Rousse hill to the Terreaux square, that square is one of the border of the Croix-Rousse quarter.
Close to the Saint-Poluycarpe church, you can admire the gate of the "Confection des soies" building, with its mulberry leaves, silkworms and its lion head. The goal of that buiding was to weigth precisely the silk fabrics at a given level of hygrometry. That implied first to dry and finally to hydrate them.
The Thiaffait lane and the Mermet lane surround the Saint Polycarpe church.
