Pirin National Park (Bulgarian: Национален парк “Пирин”), originally named Vihren National Park, encompasses the larger part of the Pirin Mountains in southwestern Bulgaria, spanning an area of 403.56 km2 (155.82 sq mi). It is one of the three national parks in the country, the others being Rila National Park and Central Balkan National Park. The park was established in 1962 and its territory was expanded several times since then. Pirin National Park was declared a UNESCO World Heritage Site in 1983. The altitude varies from 950 m to 2,914 m at Vihren, Bulgaria’s second highest summit and the Balkans’ third.
Source: Wikipedia
