A little more rough-and-tumble than the Mercado Municipal is the Feria Libre. You can bargain hard with the Mapuche vendors who sell their crafts and produce in the blocks surrounding the railroad station and bus terminal. Leave the camera behind, as the vendors aren't happy about being photographed. It's open from about 7 to 2, Monday through Saturday.
Barros Arana at Miraflores, Temuco, Chile