Grizzly Jacks Grand Bear Resort offers skin-drenching fun all year long right in the beautiful setting of Starved Rock State Park. Located just 1.5 hours from Chicago our 60 wooded acres offer all of natures wonders including Grand Bear Falls a 24000 sq. ft. indoor water park The Enchanted Forest our 36000 sq. ft. indoor amusement park beautiful lodge accommodations as well as our 1800 sq. ft. vacation villas and luxurious 2800 sq. ft. cabins.