Australia Square Office block Iconic cylindrical office building designed by Harry Seidler and Associates. Locate -33.864973761076, 151.20822715493 Milestone Constructed 1965 - 1967 {"name":"Constructed","target":"","target_text":null,"date":{"#markup":"<span class='date'>1965<\/span><span class='separator'> - <\/span><span class='date'>1967<\/span>"},"date_start":"1965","date_end":"1967"} Position Architect Seidler, Harry 1967 {"name":"Architect","target":"Seidler, Harry","target_text":null,"date":{"#markup":"<span class='date'>1967<\/span>"},"date_start":"1967","date_end":"1967"} Engineer Nervi, Pier Luigi 1967 {"name":"Engineer","target":"Nervi, Pier Luigi","target_text":null,"date":{"#markup":"<span class='date'>1967<\/span>"},"date_start":"1967","date_end":"1967"} Type Office block {"name":"Office block","target":"","target_text":null,"date":{"#markup":"<span class='date'><\/span>"},"date_start":null,"date_end":null} image