Ksar Ghilane is an oasis located on the edge of the Sahara Desert in Tunisia, known for its natural hot spring and Roman fort ruins. Due to its desert location, accessibility can be challenging, often requiring a 4x4 vehicle; guided tours are highly recommended, especially for navigating the dunes. The best time to visit is during the cooler months (October to April) to avoid extreme heat. Expect to spend around $50-$150 per person for a day trip, including transportation and activities. A typical visit lasts a full day, allowing time for swimming in the hot spring, exploring the fort, and enjoying the desert landscape. Solo travel is possible but not advised due to the remoteness and potential safety concerns.