Escape the roaring cars on Lake Shore Drive and the crowds at Lincoln Park Zoo by slipping through the unobtrusive entrance to the Alfred Caldwell Lily Pool. Created in the mid-1930s, this often-overlooked garden was designed by Prairie School landscape architect Alfred Caldwell, who also worked on several of Frank Lloyd Wright's projects. The Lily Pool lets you see Caldwell's work without the influence of Wright, but the garden is still pure Prairie School subterfuge: it appears to be a natural, weed-filled Midwestern grassland — complete with rocky outcrops — but it was carefully designed and cultivated as a miniature wilderness. It's also the perfect place for a picnic.