The architect of 11 Diagonal Street is Helmut Jahn and it was completed in 1983. It has 20 floors and a floor area of 1200 square metres.
[['11 Diagonal Street', 'COMPLETION_DATE', '1983'], ['11 Diagonal Street', 'FLOOR_COUNT', '20'], ['11 Diagonal Street', 'ARCHITECT', 'Helmut Jahn'], ['11 Diagonal Street', 'FLOOR_AREA', '1200 (square metres)']]