Illini Country Club is an 18-hole private golf course in Springfield, Illinois, built in 1906 and designed by Tom Bendelow. It sits in the $$$ (premium) price range for golf in Illinois. The course is open all year. 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.