From the club website:

Wynstone was established in 1989 and is surrounded by one of the most prestigious communities in Lake County. Our membership includes business and community leaders that reside in luxurious homes surrounding the course, as well as people from surrounding communities. Our standards of hospitality are designed to maintain a collegial, yet sophisticated atmosphere. Our members' families enjoy the benefits of extraordinary hospitality, casual elegance and a wide array of amenities that contribute to their enjoyment of the Wynstone Lifestyle.

Golf legend Jack Nicklaus crafted our breathtakingly beautiful and challenging golf course among the rolling hills and wetlands of Northern Illinois. His vision and respect for the topography generated a championship golf course that was immediately recognized among the "top one hundred" golf courses in the United States. Skillfully woven into the natural environment, the combination of the signature golf course and luxury home estate setting make Wynstone the finest gated community in the Midwest.