The Pian di Spagna and Lago di Mezzola Nature Reserve was established by the Lombardy Region in 1983 in implementation of the directives contained in the Ramsar Convention (IRAN, 1971), whose purpose is to ensure a suitable environment for the rest and nesting of the migratory avifauna, to protect and maintain the natural and landscape characteristics of the area. The morphology of the Pian di Spagna-Lago di Mezzola Nature Reserve allows you to get to know and appreciate many of the historical-environmental aspects that characterize it through easy itineraries, which wind mainly around the perimeter of the protected area. Visits are possible in all seasons, although it is advisable to avoid the hottest moments of the summer days. Some routes can be done entirely only accompanied by a Guide of the Reserve.