The Sundarbans, a UNESCO World Heritage Site, is the world's largest mangrove forest, renowned for its unique ecosystem and diverse wildlife, including the Royal Bengal tiger. Accessibility is primarily by boat from towns like Mongla and Khulna. Due to the challenging terrain and potential wildlife encounters, solo visits are strongly discouraged; guided tours are essential for safety and maximizing wildlife spotting opportunities. The best time to visit is during the dry season (October to March) when the weather is more favorable and wildlife is easier to spot. Expect to spend at least 2-3 days exploring the area, with costs varying depending on the tour operator and level of comfort, but generally ranging from moderate to expensive, considering park fees, boat rentals, and guide services. Be aware of potential seasonal restrictions due to monsoons and related weather conditions.