Sears its naming rights to the building expired in 2003 it remained the Sears Tower until early 2009. In March 2009 London-based insurer Willis Group Holdings, Ltd., was given the building's naming rights to encourage them to occupy the building. The official renaming as the "Willis Tower" took place on Thursday, July 16, 2009, during a public ceremony hosted by Willis Group Holdings. In the 1990s, the company began divesting itself of many non-retail entities, which were detrimental to the company's bottom line. Sears spun off its financial services arm which included brokerage business Dean Witter Reynolds and Discover Card. It
Chase Tower (Chicago) live audience at the Chase Auditorium under the plaza. Design architects for the construction were C.F. Murphy Associates, Stanislaw Z. Gladych and Perkins and Will. Chase Tower is known for both its distinctive curving shape and its vibrant public space: a deep sunken plaza at the geographic center of the Chicago Loop, complete with a jet fountain and Marc Chagall's ceramic wall mural "Four Seasons". The ground floor is home to the largest Chase Bank branch in Chicago with 22 ATMs. Chase Tower (Chicago) Chase Tower, located in the Chicago Loop area of Chicago, in the U.S. state of Illinois