The sylvan nature of Mercer Island is beautifully demonstrated within the well-maintained park and trail system on the island. Hike, bike, walk, play, watch nature, swim, participate in organized sports – residents may enjoy all of these outdoor activities. On the north end, the 20 acre Park on the Lid offers families countless hours of playtime with its children’s play area, sports fields and basketball courts. Three of the larger city parks– Luther Burbank Park, Clarke Beach and Groveland Beach Park– have beaches. Luther Burbank itself contains 4,000 feet of shoreline, a boat dock and fishing pier, three miles of maintained trails, a children’s play area, tennis courts, and the city’s only off-leash dog park. The south end Pioneer Park contains 113 wooded acres, and its Southeast Quadrant is specifically set up for horseback riding.