Willis Tower was $50 million. Since 2007, the building owners considered building a hotel on the north side of Jackson, between Wacker and Franklin, at the plaza that is the entrance to the tower's observation deck. The tower's parking garage is beneath the plaza. Building owners say the second building was considered in the original design. The plan was eventually cancelled as city zoning does not permit construction of such a tall tower there. Although Sears' naming rights expired in 2003, the building continued to be called the Sears Tower for several years. In March 2009, London-based insurance broker Willis Group Holdings
Century Tower (Chicago) Century Tower (Chicago) The Century Tower Condominiums, formerly known as the Trustees System Service Building, is a historic building located at 182 West Lake Street in the Loop in Chicago, Illinois. The building was designed in 1929 and completed in 1930; at the time of its completion, it was the tallest reinforced concrete building in the world. Its original tenant and namesake was the Trustees Service System, a bank that specialized in consumer loans. Architects Thielbar and Fugard designed the building in the Art Deco style. The building's design consists of a twenty-story main building topped by an eight-story tower