Pirin is a mountain range located in southwestern Bulgaria and extends into Greece. It is part of the Rila-Rhodope mountain system and is known for its stunning natural beauty, including deep valleys, glacial lakes, and diverse flora and fauna. The highest peak, Vihren, reaches an elevation of 2,914 meters, making it one of the tallest mountains in Bulgaria. The Pirin National Park, established in 1962, protects the unique ecosystems and landscapes of the region. It is a UNESCO World Heritage Site, recognized for its rich biodiversity and numerous hiking trails. The park is popular among outdoor enthusiasts for activities like hiking, skiing, and rock climbing.