The ‘Islas Atlanticas de Galicia’ National Park comprises four island groups (Cíes, Ons, Sálvora and Cortegada) also called the Atlantic Islands. It is the only marine-terrestrial national park in Galicia in Spain. As it is a popular tourist destination, the park management actively works on balancing nature protection and visitor satisfaction through the promotion of sustainable tourism practices. Therefore, efforts are made in ecotourism development. As part of this initiative, the Atlantic Islands became certified by the European Charter for Sustainable Tourism of the EUROPARC Federation.