For over 40 years, the name Sears invoked an image of a tall black tower in Chicago’s skyline. Although still commonly referred to as the Sears Tower, London-based insurance broker Willis Group Holdings, Ltd. obtained the naming rights to the building on July 16th 2009. Sears’ legacy as one of Chicago’s mail-order giants, however, goes back further than the construction of the Sears Tower in 1974. | Chicago Architecture Center

1.6K reactions · 325 shares | The Willis Tower, formerly Sears Tower, is a 110-story skyscraper in Chicago, completed in 1973. Standing 1,450 feet tall, it was once the tallest building in the world. Renamed in 2009, it features the Skydeck with “The Ledge,” a glass balcony offering stunning city views. #documentary #documentaryfilm #storytelling #jayveescars | Denis Karori | Facebook

Here's what the view looks like from OUTSIDE The Ledge at the Willis (Sears) Tower Skydeck. | WGN TV

44K views · 839 reactions | Wind blowing off Lake Michigan is a common challenge to architects and engineers building in Chicago. Here's how Fazlur Kahn, structural engineer of Willis (Sears) Tower, developed a system capable of distributing the load of the building's 110 stories in the face of even the strongest gusts. | Chicago Architecture Center | Facebook