Spencer T. Olin Community Golf Course is an 18-hole public golf course in Alton, Illinois, built in 1989 and designed by Arnold Palmer. It sits in the $$$ (premium) price range for golf in Illinois. The season runs Apr 1 to Oct 1. Tee times can be booked 14 days in advance. Guests are welcome.
Details like fees and seasons change, so call the course before you head out.