  the franklin center is a 60-story skyscraper completed in 1989 as the at&t corporate center to consolidate the central region headquarters of the american telephone & telegraph company (at&t). it stands at a height of  and contains  in the loop neighborhood of downtown chicago. it is located two blocks east of the chicago river and northeast of the willis tower with a main address of 227 west monroe street and an alternate address of 100 south franklin street. in the loop community area of downtown chicago. the supertall building is the tallest constructed in chicago in the last quarter of the 20th century.{{cite web |url=http://skyscraperpage.com/cities/?buildingid=37 |accessdate=2014-09-29 |publisher=skyscraperpage.com |title=franklin center |year
AT&T_buildings Buildings_and_structures_completed_in_1989 Office_buildings_in_Chicago,_Illinois Skidmore,_Owings_&_Merrill_buildings Skyscrapers_between_300_and_349_meters Skyscrapers_in_Chicago,_Illinois Telecommunications_company_headquarters_in_the_United_States