Nyerere National Park, Tanzania's largest national park (formerly part of Selous Game Reserve), offers an exceptional safari experience, primarily accessible by light aircraft from Dar es Salaam to internal airstrips, or by challenging 4x4 road transfers. Due to the vast wilderness, wild animals, and park regulations, guided safaris with experienced rangers are mandatory for safety and optimal wildlife viewing; solo visits are not permitted. The best time to visit is during the dry season (June to October) when wildlife congregates around water sources, as the wet season (March to May) can make roads impassable. Costs are significant, encompassing park fees (around $70-80 USD per person per day), accommodation (ranging from mid-range to luxury camps/lodges), and safari activities, typically averaging several hundred dollars per person per day; a typical visit lasts 3 to 5 days to fully appreciate its diverse ecosystems and unique activities like boat safaris on the Rufiji River and walking safaris.