Nature Reserve of the Laguna del Marquesado Nature · Laguna del Marquesado, Serranía Alta, Cuenca Karst lake surrounded by reed beds which gives the village its name, a refuge for waterbirds and freshwater fish and a habitat for rare flora such as the threatened Sparganium natans. Photo: Rodelar (CC BY-SA 4.0) What to see and do in Laguna del Marquesado