The Central Balkan National Park is one of the largest and most valuable of the protected areas in Europe. The International Union for Conservation of Nature (IUCN) has listed the Park as Category 2. The national park and eight of the nine nature reserves are on the UN list of Representative Protected Areas, and four of the nature reserves are included in the World Network of Biosphere Reserves under the UNESCO Man and Biosphere Programme. It is a full member of the WWF-led PAN Parks. Since 2017, the ancient beech forests within all nine park reserves have been included in the Primeval Beech Forests World Heritage Site.