SEARS TOWER,CHICAGO,ILLINOIS,FEET,METERS,STORIES,ORIGINAL,OWNERS,SEARS ROEBUCK AND COMPANY,ARCHITECT,BRUCE,GRAHAM,DESIGN,PARTNER,MERRILL,ENGINEER,FAZLUR KHAN,PHOTO,COURTESY,SKIDMORE OWINGS MERRILL,1960S,WORLDS,LARGEST RETAILER,BILLION,SALES,OPERATIONS,DOWNTOWN CHICAGO,COMPANY,DETERMINED,OFFICE SPACE,EMPLOYEES,MAJOR,DEPARTMENTS,DESIGNS,STRUCTURE,SEARS,ARCHITECTS,REAL ESTATE,ADVISORS,PRESSED,TOWER,UPPER,TENANTS,BUILDING,STRETCHED,PLANS,HEIGHT,THE WORLD TRADE CENTER,100 FEET,TALL,FAA,FEDERAL AVIATION,ADMINISTRATION,LET US,TWENTY YEARS AFTER,COMPLETION,SKYSCRAPER,LARGEST,OFFICE OF,THE STRUCTURE,TUBE,SYSTEM,NINE,SQUARES,OVERALL,CURTAIN WALL,DARK,TINTED GLASS,ABOVE,FLOOR,AWAY,THE TOWER,ROSE,CREATE,SMALLER,SILHOUETTE,FRONTED,TOURIST,ENTRANCE,SKYDECK,PAVILION,TOURISTS,THE LOSS,PETRONAS TOWERS,KUALA LUMPUR,LONGER,IN THE WORLD,HIGHEST,ROOF DECK,ELEVATOR,RIDE ON,CLEAR,POSSIBLE,FROM THE TOP,