The final phases of the multi-year, $25 million transformation of the Hilton Chicago/Oak Brook Hills Resort and Conference Center are now complete. Fueled by a desire to be regarded as one of the leading resorts in the Midwest, the Prospera Hospitality managed property has created a new vision and identity centered on modern design and innovative resort culture. Conveniently located just 18 miles west of downtown Chicago in upscale Oak Brook, the Audubon and IACC certified resort positions itself as an Illinois premier destination for business, leisure, and recreation.