![]() On a clear day, it is possible to see four states from the top. Though no longer the tallest building in the world, the Tower is still title to the world's highest occupiable floor and the highest roof deck, and an elevator ride. The Sears attracts some 1.5 million tourists each year, despite the loss of its title to the Petronas Towers in Kuala Lumpur in 1997. The Tower is fronted by a separate tourist entrance, the Skydeck Pavilion added in 1985 by Skidmore Owings and Merrill. Tube buildings gain most of their structural support from a rigid network. The Sears Tower opened to tenants in 1973, though construction was not actually completed until 1974. Willis Tower would retain this distinction for the next 25 years, becoming one of the most famous structures anywhere in the world. ![]() Above the fiftieth floor, some squares dropped away as the tower rose to create smaller floor plates and a distinctive stepped silhouette. The Sears Tower is an example of the revolutionary bundled-tube structural design. Willis Tower, formerly (19732009) Sears Tower, skyscraper office building in Chicago, Illinois, located at 233 South Wacker Drive, that is one of the world’s tallest buildings. When the construction of Willis Tower (which was then known as Sears Tower) was completed in 1973, the building was the tallest building in the entire world. Altitude is located on the 66 th and 67 th floors featuring a caf, relaxing lounge seating, informal meeting spaces, and breathtaking views of Chicago’s lakefront. ![]() The surface is divided into 110 apartments, 108 above ground, which is accessed with 104 elevators, 16 of which are double height. At 1454 feet, its height surpassed the World Trade Center by 100 feet and was, according to Sears "as tall as the FAA (Federal Aviation Administration) will let us go." For more than twenty years after its completion in 1974, Sears Tower remained the tallest skyscraper, and it is still the largest.Īs designed by architect Bruce Graham and engineer Fazlur Khan of the Chicago office of Skidmore Owings and Merrill (SOM), the structure was a "bundled tube" system of nine squares with sides of 75 feet (for an overall 225 x 225 ft), sheathed in a curtain wall of dark tinted glass. Tower House is located on the 33 rd and 34 th floors featuring a bar, caf, conference center and 30,000 square foot fitness center called TONE. Sears Tower is an attractive and modern office with a floor area of 418.64 square meters of which are rentable 353 961 m. The building slowly stretched to 4.5 million ft2 and 110 stories, and in July 1970, Sears trumpeted its plans for the world's tallest building. The first designs were for a boxy structure exclusively for Sears, but the architects and real estate advisors pressed for a taller tower with upper floors for tenants. The company determined it needed 3 million ft2 of office space with floors of 50,000 ft2 to accommodate its 13,000 employees in their major departments. The building was officially renamed the Willis Tower on July 16, 2009, after a London-based holdings firm retained the naming rights along with leasing space on. illustration of sears tower, chicago, once the worlds tallest building 1974 - 1998 - sears tower stock illustrations General view of Chicago, and the Willis Tower, on Sunday, Jan. In the late 1960s, Sears Roebuck and Company, then the world's largest retailer with $8.9 billion in sales, decided to consolidate its administrative operations in downtown Chicago.
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