Free Admission Sunday from 10:00pm - 5pm at Design Museum Of Chicago - see INFO below. This land was forcibly purchased after more than two years of open warfare that built on decades of violent encroachment, and after the defeat of a pan-Indian movement to keep settlers out of the Great Lakes region at the Treaty of Chicago in 1821. Today, Illinois is still home to more than 75,000 tribal members, including Ho-Chunk, Miami, Inoka, Menominee, Sac, Fox, and their descendants. Chicagoland, specifically and proudly, hosts one of the largest and most diverse urban Native communities in the U.S. More Info below.