The Blue Cross-Blue Shield Building is an office building in Chicago, Illinois. The building is located at 55 W Wacker Drive in the Loop in Downtown Chicago. It was designed in a Brutalist style by C.F. Murphy Associates. The building opened in 1968 as the headquarters for BlueCross BlueShield of Illinois.[1] Foreign tenants of this Building includes the Taipei Economic and Cultural Office in Chicago (TECO-Chicago), the consular post of Taiwan in Illinois.[2]