Biltmore Country Club is an 18-hole private golf course in Barrington, Illinois, built in 1926 and designed by Leonard Macomber. It sits in the $$$ (premium) price range for golf in Illinois. The season runs Apr 1 to Oct 15 (closed on Mondays). Tee times can be booked 4 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.