Samnak Wetland Ecological Park is an ecological park along the Nakdong River in Busan where reed wetlands meet open fields. Cherry blossom paths, cosmos flowers, and silver grass fields follow one another through the seasons, and the park has bicycle rentals and walking trails. In summer a free swimming pool operates, and campsites and spaces for soccer, gateball, and badminton are available. On weekends parking is crowded enough that entering the parking lot can take an hour.