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| 3432 Chicago skyline dominated by John Hancock Center |
In the 1770s, Jean Baptiste Point du Sable established a fur trading post in the area which later became known as Fort Dearborn, along the bank of the Chicago River. In 1837, the settlement had a little more than 3,500 inhabitants and was incorporated as a city. Located near a portage between the Great Lakes and the Mississippi River watershed, Chicago emerged as an important transportation hub between the eastern and western United States, becoming the fastest growing city in the world for several decades.
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| 1397 Downtown Chicago with Northwestern Train Station, Presidential Towers and Willis Tower |
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After the Civil War ended in 1865, the American economy was transformed by the industrial revolution, in which the city of Chicago was its leader, becoming America's second largest city and a leading industrial center. The Great Chicago Fire, which destroyed most buildings within the downtown area, led to the largest building boom in the history of the nation. In 1885, the first steel-framed high-rise building, the Home Insurance Building, rose in the city as Chicago ushered in the skyscraper era.
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| 1397 Chicago skyline seen from the Chicago River |
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| 1399 Willis Tower |
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Willis Tower (known also as Sears Tower) is a 108-story, 442m skyscraper completed in 1973. It surpassed the World Trade Center towers in New York to become the tallest building in the world, a title held for nearly 25 years. Its innovative design, structurally efficient and economic, inspired by an advertisement for a package of cigarettes, was realised by the architect Bruce Graham and structural engineer Fazlur Rahman Khan, who used for the first time bundled tube structure. The tower's observation deck (the Skydeck), located on the 103rd floor, is 412m high and is one of the most famous tourist attractions in Chicago.
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| 1400 Willis Tower and Wacker Drive |
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Presidential Towers is a series of four nearly identical towers with 49 storeys (141m), each a step back from the leader, and spanning two city blocks. Designed by Solomon Cordwell Buenz & Associates and built between 1985 and 1986, it was one of the pioneering residential projects in the River West neighborhood, an area that was once seen as nothing more than a ramshackle collection of old brick warehouses. 333 West Wacker Drive is an office building with a height of 149m, designed by Kohn Pederson Fox Associates and completed in 1983. On the side facing the Chicago River, the building features a curved green glass façade, while on the other side the building adheres to the usual rectangular street grid.
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