Aysén is the most exciting fly-fishing region in Chile and is internationally renowned, drawing serious anglers, including a number of Hollywood stars. The season varies slightly according to the area, but in general lasts from October or November to May. You need a licence to fish (CH$10,000), widely available in sport-fishing shops. For more info, contact the Servicio Nacional de Pesca at Victoria 2832, Valparaíso (32 281 9100, sernapesca.cl). A number of first-class fishing lodges have sprung up around the region; most lodges are of an extremely high standard.