This underwriting management company sells general liability insurance coverage wholesale. It also offers commercial property casualty insurance to the entertainment, sports and environmental industries. Berkley Specialty Underwriting Managers' headquarters are located on the fifth floor of the Three Ravinia building in the 42-acre Ravinia Office Park, which includes an extensive wooded area with paths, gardens, fountains and a creek. The Three Ravinia lobby features a lush garden with exotic plants, hanging vines, a stream, waterfalls, paths and benches, all reflected in a beautiful mirror ceiling.