The Willis Tower, originally and still commonly referred to as the Sears Tower, is a 110-story, 1,451-foot (442.3 m) skyscraper in the Loop community area of Chicago in Illinois, United States.

Experience jaw dropping views from Chicago's iconic Willis Tower spanning throughout Chicagoland and up to four states! On your way up to spectacular views and The Ledge, immerse yourself in the incredible story of Chi-Town.

Willis Tower (formerly known as the Sears Tower) is a 110 story building in the heart of Chicago’s downtown. Willis Tower is not only one of the tallest buildings in the world, it is also a magnificent icon, impossible to miss within Chicago’s skyline.

The newly redesigned Willis Tower brings a whole new meaning to office space. Come see how Willis redefines the workplace by delivering world-class experiences to the people of Chicago.

Jan 3, 2025 · Willis Tower, skyscraper in Chicago, located at 233 South Wacker Drive, that was the world’s tallest building until 1996. That year it was surpassed by the Petronas Twin Towers (1,483 feet [452 meters] tall), in Kuala Lumpur, Malaysia.

Learn how Chicago’s tallest tower became known the world over. Formerly known as the Sears Tower, Willis Tower has been an iconic part of the Chicago skyline since 1973. At 110 stories high, Willis Tower is also one of the largest skyscrapers in the world.

Learn about Willis Tower’s history, the tallest building in Chicago and a premier corporate office building and home of the Skydeck.

Jun 1, 2010 · Towering over the windy city of Chicago, the Willis Tower (formerly known as Sears Tower) was once the tallest building in the world upon its completion in 1973.

An enduring Chicago landmark. For decades the tallest building in the world, the 110-story Willis Tower (formerly Sears Tower) marked a major step in exemplifying and defining SOM’s belief that a building’s structure should inform its exterior profile.

The former Sears Tower in Chicago boasts exceptional construction, architecture, and design. It was crafted by renowned architect Bruce Graham and structural engineer Fazlur Rahman Khan and made history with its innovative bundled tube system.