The City of Maple Valley obtained the Lake Wilderness Park from King County in January 2003. At 117 acres, Lake Wilderness Park is a large regional park with lots of prime shoreline, preserved forestland, and meandering pathways. 

Running through the middle of Lake Wilderness Park is Jenkins Creek, a tributary for Big Soos Creek, which empties into the Green River. The park also includes three wetlands. A variety of birds and animals also make their home in Lake Wilderness Park, including deer, beaver, raccoon, hawks, wrens, and ruffed grouse. 

Annual events held in Lake Wilderness Park include: Fishing Derby & Fishermen's Breakfast, Maple Valley Days, Music in the Park, 4th of July Celebration with Fireworks, Seafair Kid's Festival and Family Concert, Outdoor Movie Under the Stars, Wilderness Games, and Holiday Lights Celebration