Situated steps from Grant Park and nearby numerous residential towers, educational institutions and student housing developments, the South Loop offers a truly electric location. Adding to the convenience is the close proximity to Lake Shore Drive and the Red, Orange, and Green line trains at Roosevelt.The prestigious South Loop Office Center at 850 South Wabash is the premier address in the South Loop for office and medical tenants. Originally built as a YMCA and later changed over to a movie theater, the building was converted into office use and features a renovated lobby and common corridors and updated elevators and mechanical systems. , and dramatic ceiling heights.