Durmitor National Park, a UNESCO World Heritage site in Montenegro, offers breathtaking mountain scenery, glacial lakes, and the spectacular Tara River Canyon. Most main attractions, like Black Lake, are easily accessible by car, with well-maintained paths for walking; however, more remote areas and higher peaks require hiking. While many trails can be explored solo, guided tours are highly recommended for activities like white-water rafting on the Tara River or for challenging mountain hikes if you're inexperienced or prefer local insights. The park is best visited from June to September for hiking and rafting, while winter transforms it into a skiing destination, with some roads and trails becoming inaccessible due to snow. An entrance fee of a few euros per person per day is typically required, with additional costs for guided activities or rafting. A typical visit can range from a full day to explore main sights, to 3-5 days for extensive hiking, climbing, and water sports. Be prepared for rapid weather changes in the mountains and ensure you have appropriate gear.