Lincoln Park is a 1,208 acre park along the lakefront of Chicago, Illinois' North Side. The park is characterized by parkland, beaches, recreational areas, nature reserves, and harbors. Lincoln Park, with 20 million visitors a year, is the second most visited park in the United States. The park includes a number of harbours with boating facilities, as well as public beaches. There are landscaped gardens, bird refuges, a Zoo, the Lincoln Park Conservatory, the Chicago History Museum, the Peggy Notebaert Nature Museum, the Alfred Caldwell Lily Pool, and a theater on the lake with regular outdoor performances during the summer.