Koli National Park, located in Finland's North Karelia region, is a picturesque natural haven covering 30 square kilometers of forested hills along Lake Pielinen. Established in 1991, the park preserves traditional agricultural practices and offers stunning views from the summit of Koli Hill, known as Ukko-Koli. Visitors can enjoy hiking, skiing, and exploring caves like Pirunkirkko while immersing themselves in the inspiring landscapes that have captivated artists and composers for centuries. With its rich history and diverse ecosystems, Koli National Park is a must-visit destination for nature lovers and outdoor enthusiasts alike.