(16 sides, donut, IL-16-11) in Tinley Park, Cook County, IL. IL43 (Harlem Av.) N. 0.5 miles from jct with I80 exit 148 on the S. side of Tinley Park, W. on 183rd St. 0.3 miles, N. & immediate E. into the Tinley Park Mental Health Center at 7400. Get permission at the office. (N41 33.705 W87 47.692) Photo 3-15-04.