The Sears Tower: Chicago’s Iconic Skyline Landmark
The Sears Tower, now known as the Willis Tower, stands at 1,454 feet (443 meters) and has been a defining feature of Chicago’s skyline since its completion in 1973. Designed by Skidmore, Owings & Merrill and structural engineer Fazlur Rahman Khan, it was the world’s tallest building for 25 years and remains a testament to innovative bundled‑tube construction.
Design and Construction
The tower’s 108 stories are arranged in a series of nine interconnected tubes, a design that distributes wind loads efficiently while allowing interior flexibility. Construction began in 1970 and faced labor disputes and strict wind testing, but was finally topped out on May 3, 1973.
Legacy and Impact
The Sears Tower’s height and modernist aesthetic set a benchmark for skyscrapers worldwide. Though it was renamed the Willis Tower in 2009, it continues to attract visitors to its 103rd‑floor observation deck and remains Chicago’s tallest building.
