Laguna de los Tollos Nature · El Cuervo de Sevilla, Bajo Guadalquivir, Seville Spain's third-largest lagoon, straddling El Cuervo de Sevilla and Jerez de la Frontera (Cádiz). It underwent an in-depth ecological restoration through a Life+ project carried out between 2010 and 2015. 2010-2015 (proyecto de restauración Life+) Photo: Gahlaiba (CC BY-SA 3.0 es) What to see and do in El Cuervo de Sevilla