Sirius House Office block Inter-war Commercial Palazzo office building at 23-25 Macquarie Place that opened in 1926 and was redeveloped in 1989. Only the sandstone facade was kept from the original building. Locate -33.863235042658, 151.20961411096 Milestone Constructed 1925 - 1926 {"name":"Constructed","target":"","target_text":null,"date":{"#markup":"<span class='date'>1925<\/span><span class='separator'> - <\/span><span class='date'>1926<\/span>"},"date_start":"1925-01-01","date_end":"1926-01-01"} Name Commemorates HMS Sirius {"name":"Commemorated by","target":"HMS Sirius","target_text":null,"date":{"#markup":"<span class='date'><\/span>"},"date_start":null,"date_end":null} Property Occupied by Workers' Educational Association Sydney 1939 - 1948 {"name":"Occupied","target":"Workers' Educational Association Sydney","target_text":null,"date":{"#markup":"<span class='date'>1939<\/span><span class='separator'> - <\/span><span class='date'>1948<\/span>"},"date_start":"1939-01-01","date_end":"1948-01-01"} Type Office block {"name":"Office block","target":"","target_text":null,"date":{"#markup":"<span class='date'><\/span>"},"date_start":null,"date_end":null} image