Today 's Sears Tower renamed Willis Tower after London fashion company . The retailing giant has since moved its headquarters to suburban Chicago . Thousands join online group opposing building 's name change . Sears opened in 1973 with original tenants Sears Roebuck & Co .
Today 's Sears Tower renamed Willis Tower after London fashion company . Thousands join online group opposing building 's name change . Sears opened in 1973 with original tenants Sears Roebuck & Co .