willis tower 2min presentation? plz help me
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Willis Tower is the heart of downtown Chicago and the future of work and play. The 110-story building is one of the tallest buildings in the world and the second tallest building in North America, making it impossible to miss when appreciating the city’s skyline.
The magnitude of this magnificent steel frame skyscraper can seem incomprehensible. Take a look at these facts and figures and we guarantee you won’t look at America's tallest building the same way again.
The original vision for Willis Tower came to life in 1969 when Sears Roebuck and Company decided it needed a central office space for its 350,000 employees.
Willis Tower’s was designed by architectural firm Skidmore, Owings and Merrill.
After breaking ground in 1970, it took three years to complete the tower.
2,000 construction workers took part in building Willis Tower.
The building features a steel-framed bundled-tube construction method.
Construction was completed in May 1973.
Willis Tower was the world’s tallest building until 1998.
After 18 years, Sears Roebuck and Company sold the tower and moved out of the building.
In 2009 the building was renamed Willis Tower after the Willis Group Holdings, the global insurance broker who calls the Tower its Midwest home.
Willis Tower was purchased by Blackstone in 2015 for $1.3 billion
Skydeck opened in 1974 and attracts more than 1.7 million visitors annually.
In July 2009, U.S. Equities Realty led the design and construction of a multi-million-dollar renovation of Skydeck Chicago.
With the renovation of Skydeck came The Ledge, a series of windows that extend from the building offering views straight down over the city of Chicago.
Inspiration for The Ledge came from hundreds of forehead prints left behind on the Skydeck windows each week as seen in the memorable scene from Ferris Bueller’s Day off.
The ledge is 1,353 feet and 103 stories up.
Skydeck is the highest observation deck in the United States.
The Ledge is made of three layers of half-inch thick glass laminated into one seamless unit.
The Ledge is built to withstand four tons of pressure and can hold 10,000 lbs.
Each Ledge box has “heat tracing” to melt snow off.
The boxes retract into the building for easy cleaning and maintenance.
On a clear day, views can span 50 miles and four states: Illinois, Indiana, Wisconsin and Michigan.
Guests can enjoy interactive and educational attractions that highlight the iconic building and celebrate Chicago’s sports, architecture, history, food, music and people.