Darwin's best waterfalls are in nearby Litchfield National Park, about an hour's drive south, featuring accessible, swimmable spots like Wangi Falls (monsoon rainforest setting) and dramatic views at Tolmer Falls (no swimming, bat viewing). Other notable falls in the region include those in Kakadu National Park, such as Jim Jim Falls, often requiring 4WD and seasonal access, offering stunning scenery and bushwalking.