first_imgShareFacebookTwitterPinterestWhatsappMailOrhttps://www.archdaily.com/67599/ad-classics-john-hancock-center-som Clipboard Projects Mixed Use Architecture “COPY” “COPY” Area:  2800000 ft² Photographs Architects: Skidmore, Owings & Merrill Area Area of this architecture project ArchDaily Photographs:  Flickr – User: hanneorla, Flickr – User: theta_sigma, Michael Davis Photography as seen on FlickrText description provided by the architects. Once the tallest building in the world outside of New York when it was completed in 1970, the John Hancock Center stands along with the Willis (Sears) Tower and Mies’ 860-880 Lake Shore Drive residences as another glimmering landmark of the Chicago skyline. The 100-story skyscraper was designed by architect Bruce Graham and structural engineer Fazlur Khan of Skidmore, Owings, & Merrill and soars 1, 127-feet into the sky. It was the world’s first mixed-use high-rise, containing offices, restaurants, and the third highest residence in the world with approximately 700 condominiums.Save this picture!© Flickr – User: hanneorlaConstruction on the tower began in 1965. Due to the high winds in Chicago, one of the main factors that had to be taken into consideration was using a secure structure for the building that would minimize movement on windy days. The structure consists of a tubular system that strengthens the building against wind and earthquakes. The famous cross-bracing on the exterior provides security against horizontal movement while opening up the interior of the building with more uninterrupted floor space. Although the X-bracing is massive and slightly blocks views from the interior, it is the Hancock Building’s signature exterior feature and is structurally sound.Save this picture!© Flickr – User: theta_sigmaVisitors are welcomed from ground level with an elliptical plaza that steps down towards the entrances of restaurants and has its own 12-foot waterfall. On the ground floor there is also a lobby that was redecorated in 1995 with textured limestone surfaces. Save this picture!SOM – Ezra Stoller © EstoOn the 95th story is the John Hancock Observatory with Chicago’s only open-air SkyWalk that was built with steel casing approved by NASA. Popular for tourists, the observatory competes with Willis Tower’s Skydeck, offering views of the city from every angle, including gorgeous shots of Lake Michigan and on a clear day the sights of four other states. Halfway up the building on the 44th floor also lies America’s highest swimming pool. With both of these features, along with an astonishing height of 1,506-feet when measured to the top of its two identical antennas, the John Hancock Center is the quintessential model of a brilliantly engineered skyscraper that adds beauty through its symmetry to the skyline, making it one of Chicago’s finest works of architecture.Save this picture!SOM – Ezra Stoller © EstoProject gallerySee allShow lessNew Yorkers Claim Their WaterfrontArticlesPhyllis Lambert Design Montréal GrantArticlesProject locationAddress:ChicagoLocation to be used only as a reference. It could indicate city/country but not exact address. Sharecenter_img United States Copy+ 16Mixed Use Architecture, Apartments, Office Buildings•Chicago, United States AD Classics: John Hancock Center / SOM AD Classics: John Hancock Center / SOMSave this projectSaveAD Classics: John Hancock Center / SOM ShareFacebookTwitterPinterestWhatsappMailOrhttps://www.archdaily.com/67599/ad-classics-john-hancock-center-som Clipboard Save this picture!© Flickr – User: hanneorlaWritten by Adelyn Perez Share CopyAbout this officeSkidmore, Owings & MerrillOfficeFollowProductsGlassSteel#TagsProjectsBuilt ProjectsArchitecture ClassicsMixed Use ArchitectureResidential ArchitectureHousingApartmentsOfficesOffice buildingsChicagoSkyscrapersMixed UseOffice BuildingsUnited StatesPublished on July 07, 2010Cite: Adelyn Perez. “AD Classics: John Hancock Center / SOM” 07 Jul 2010. ArchDaily. Accessed 12 Jun 2021. 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