Carnaval de Bornos Activity · Bornos, Sierra de Cádiz, Cádiz Carnival declared of Tourist Interest of Andalusia, held 40 days before Holy Week; also on the festive calendar are the San Laureano festivities (first weekend of July) and the Festival del Lago, a rock event held since 1980. Photo: El Pantera (CC BY-SA 4.0) What to see and do in Bornos