Abraham Lincoln Memorial Garden in Springfield, Illinois, is a 100-acre woodland and prairie landscape created as a memorial to Lincoln on land reserved along Lake Springfield when the city developed a drinking-water reservoir. Inspired by Harriet Knudson and designed by Jens Jensen in 1935, it reflects the Prairie Style and organic architecture through an idealized Midwestern scene planted entirely with species native to Illinois, Indiana, and Kentucky. Planting began in 1936 and the garden was dedicated in 1939. Its notable features include eight splitstone council rings, miles of footpaths, a nature center, restored prairie, and a historic Jensen section recognized on the National Register of Historic Places in 1992.