An officially designated National Historic Landmark, this “hidden garden” in Lincoln Park was designed by noted landscape architect Alfred Caldwell (1902- 1998) in the prairie style. Inspired by his mentor Jens Jensen and the work of architect Frank Lloyd Wright, Caldwell poetically interpreted the Midwestern landscape through the use of native plants, stratified stonework, and a natural-looking “prairie river,” with a waterfall that symbolizes its source. Completed in 1938, the site’s design also included a pavilion, council ring, and entrance gate.