Willis Tower, Chicago, United States me ek bahut uuncha building hae. Ii 527 meters (1,730 feet) uuncha hae aur ii 108 storey ke hae.[1] Chalis saal talak ii dunia ke sab se uuncha building rahaa.[1] Iske 1970 me banae ke khalaas karaa gais rahaa.[1]

Willis Tower
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Duusra websites

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References

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  1. 1.0 1.1 1.2 "Willis Tower - The Skyscraper Center". Council on Tall Buildings and Urban Habitat. Archived from the original on 2013-12-30. Retrieved 2013-12-27.