Willis Tower (Sears Tower) | Chicago

Willis Tower, formerly known as the Sears Tower, is one of Chicago’s most iconic skyscrapers and was once the tallest building in the world. Completed in 1973, it stands at 1,450 feet (442 meters) to its roof, and including its antennas, it reaches a height of 1,729 feet (527 meters). It remains one of the tallest buildings in the United States and a defining feature of Chicago’s skyline.

Architecture and Design

Designed by the architectural firm Skidmore, Owings & Merrill, with lead architect Bruce Graham and structural engineer Fazlur Rahman Khan, Willis Tower’s innovative “bundled tube” design allowed it to reach unprecedented heights while maintaining structural stability and efficiency. The building’s exterior features a sleek black aluminum and glass facade, giving it a modern and commanding presence.

Skydeck Chicago

One of the main attractions of Willis Tower is the Skydeck, located on the 103rd floor, approximately 1,353 feet (412 meters) above the ground. Visitors can access one of the highest observation decks in the United States, offering breathtaking panoramic views of Chicago, Lake Michigan, and even neighboring states on clear days.

A highlight of the Skydeck experience is The Ledge—a set of glass balconies that extend 4.3 feet (1.3 meters) outside the building, allowing visitors to look straight down to the street below. This thrilling feature provides a unique perspective and is popular for photos.

Visitor Experience

Observation Deck: The Skydeck is open year-round, with elevators whisking visitors up in about 60 seconds. Informational displays and interactive exhibits help visitors learn about Chicago’s history, landmarks, and geography.

Accessibility: The building and Skydeck are fully accessible to visitors with disabilities.

Additional Facilities: Willis Tower houses offices, restaurants, and retail spaces, functioning as a major commercial hub in downtown Chicago.

Significance

Willis Tower symbolizes Chicago’s architectural innovation and economic power. It was originally built as the headquarters for Sears, Roebuck & Co., reflecting the company’s prominence at the time. The name changed in 2009 when Willis Group Holdings leased part of the building.

Summary

Visiting Willis Tower offers a chance to experience Chicago from one of its highest vantage points, combining architectural marvel with stunning views. It remains a must-see landmark for visitors wanting to appreciate the city’s skyline and engineering achievements.