Wynstone Golf Club is an 18-hole private golf course in North Barrington, Illinois, built in 1989 and designed by Jack Nicklaus. It sits in the $$$ (premium) price range for golf in Illinois. The season runs Mar 1 to Jan 31 (closed on Mondays). Tee times can be booked 7 days in advance. Play is generally limited to members and their guests.
Details like fees and seasons change, so call the course before you head out.