It was renamed the Willis Tower on 16 July 2009.
Because the naming rights had expired.
Willis Tower. The new tenent London-based Willis Group Holdings reached an agreement with the buildings owners and the name of the tower is being changed from Sears tower to Willis Tower.
The sears tower is 110 stories tall 1550 feet tall and 442 meters. It's name was changed to Willis tower in March 2009
The Sears name rights expired in 2003 but the Insurance broker Willis from London leased a major portion of the tower asking in exchange the rights of the name. So as in TODAY July 16th 2009 The Tower's name will be Willis Tower
Willis Insurance Group recently became the largest tenant in the building and the owners have officially changed its name to Willis Tower. Sears Roebuck has not had offices in the tower since 1992.
July 16, 2009.
it is some what a tall building
When the tower was built in 1973, the major tenant was Sears (Sears Roebuck & Co.) and the company's naming rights were granted for 30 years. However, the name remained unchanged after the expiration in 2003. When Willis Group Holdings (London) took occupancy in the tower in 2009, the company purchased the naming rights effective July 16, 2009.
from its maker
Willis Group Holdings, a London-based insurance broker, consolidated its Chicago area offices to the Sears Tower. As part of the deal, Willis Group Holdings gets to put its own name on the skyscraper.
The new-name is Willis tower it was renamed in 2009
Willis Tower is the new name for the building formerly known as the Sears Tower.