Qoraalka waxaa ku qoran liiska magacyada kireystayaasha Willis Tower.
Context:Willis Tower (oo markii hore loo yaqaanay Sears Tower) waa 110-dabaq, 1,451-foot (442.3 m) dhisme dhaadheer oo ku yaal aagga bulshada Loop ee Chicago ee Illinois, Mareykanka. Waxaa naqshadeeyay naqshadeeye Bruce Graham iyo injineer Fazlur Rahman Khan oo ka tirsan shirkadda Skidmore, Owings & Merrill (SOM), waxaa la furay 1973 isagoo ahaa dhismaha ugu dheer adduunka, horyaalkii uu haystay ku dhawaad 25 sano. Waa dhismaha saddexaad ee ugu dheer Galbeedka Hemisphere, iyo sidoo kale dhismaha 23aad ee ugu dheer adduunka. Sanadkasta, in ka badan 1.7 milyan oo qof ayaa booqda Skydeck oo ah meesha ugu sarreysa Mareykanka, taas oo ka dhigaysa mid ka mid ah meelaha ugu caansan dalxiiska ee Chicago. Laga soo bilaabo Abriil 2018, kiraystaha ugu weyn ee dhismaha waa United Airlines, oo degan qiyaastii 20 dabaq. Kiraystayaasha kale ee waaweyn waxaa ka mid ah magaca dhismaha Willis Towers Watson iyo shirkadaha sharciga ee Schiff Hardin iyo Seyfarth Shaw. Morgan Stanley wuxuu noqday kireeyaha afaraad ee ugu weyn dhismaha 2017.
United Airlines, Willis Towers Watson, Schiff Hardin, Seyfarth Shaw, Morgan Stanley