Les Llaunes Nature · Castelló d'Empúries, Alt Empordà, Girona Image of Castelló d'Empúries, not of the place itself. Brackish coastal lagoons behind the beaches between the mouths of the Muga and Fluvià rivers, with salt-tolerant plants such as glasswort. Photo: jordi domènech (CC BY-SA 3.0) What to see and do in Castelló d'Empúries