Construction of 11 Diagonal Street began in 1978 and finished in 1983 with 20 floors. The architect was Helmut Jahn.
[['11 Diagonal Street', 'COMPLETION_DATE', '1983'], ['11 Diagonal Street', 'FLOOR_COUNT', '20'], ['11 Diagonal Street', 'ARCHITECT', 'Helmut Jahn'], ['11 Diagonal Street', 'BUILDING_START_DATE', '"1978"']]