Bruce Graham designed the Sears Tower (now Willis Tower) and the John Hancock Center.THE architecture world recently lost two US stalwarts — Frank Williams and Bruce Graham.

Often called the inventive giant, Graham passed away on March 6, 2010 at the age of 84. He was the architect behind the famed 110-storey Sears Tower and the 100-storey John Hancock Center, both in Chicago. Graham’s speciality was steel framed construction and he was noted for his inventiveness and creativity.

February 25, 2010 saw the passing away of Frank Williams — the "architect of skyscrapers". Williams was the creative force behind 20 buildings in Manhattan including Trump Palace and Four Seasons Hotel. He adopted a modern approach to architecture but always incorporated traditional elements. Williams' buildings can be seen across the world from Bangkok and Beijing to Shanghai and Seoul. He was 73.