Sears Tower (Willis Tower)
MAY 1973
SOM in Chicago. 442m, the tallest building in the world for 25 years. The bundled-tube structural system invented here became the standard for supertall towers.
MAY 1973
SOM in Chicago. 442m, the tallest building in the world for 25 years. The bundled-tube structural system invented here became the standard for supertall towers.