Doñana is a large natural area of wetlands, dunes, reserves, pine forests and marshes, recognized as a national park and natural park within the Doñana Natural Area. In the area there is a mosaic of very different environments, shaped by water, wind and the dynamics of the Guadalquivir, which explains its enormous ecological richness. It is one of the most important natural enclaves in Europe for its role as a refuge, passage and breeding area for migratory birds. From the authorized visit points you can see open marshes, seasonal lagoons, scrubland, pine forests and, depending on the itinerary, large floodplains that change greatly with the season. The combination of fresh and brackish water, together with the shifting sands of the dunes, creates a highly variable landscape that is easy to read on the ground. It is also a key place for emblematic species such as the Iberian lynx and the Iberian imperial eagle. Doñana is internationally recognized as a Biosphere Reserve and World Heritage Site. Its fame in guidebooks and specialized publications is due both to the natural value of the wetland and to the feeling of isolation that some sectors of the protected area preserve. The best time to visit is usually the end of winter and spring, when the marsh has more water and bird activity is higher. It should be noted that much of the area can only be visited through regulated visits and authorized itineraries. In any case, the main attraction is in the reading of the landscape, bird watching and the transition between marsh, preserve and dunes.