The river delta and the Vistonida Lake are considered to be two of the most important wetlands in Europe and are protected by the Ramsar Convention. The two wetlands rather than natural monuments, host a large number of wildlife, as well as the rich nutrient waters of the wetlands facilitate aquaculture. The large diversity of fish species that live in the wetlands attract large numbers of birds, 254 and 260 species respectively. The birdwatching is a fun and at the same time, relaxing activity which is ideal, not only for the nature lovers, but also for friends of photography. Activity: Nestos Delta - Kotza Orman - Lake Vistonida