Prestwick Country Club is an 18-hole private golf course in Frankfort, Illinois, built in 1957 and designed by Dick Nugent. It sits in the $$$ (premium) price range for golf in Illinois. The season runs Mar 1 to Nov 30. 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.