First government windmill Mill The colony's first windmill, built on Observatory Hill between May 1796 and February 1797 from parts brought to Sydney by Governor Hunter in 1795. It quickly fell into disrepair and by 1810 only the stone tower remained. image Locate -33.859083626584, 151.20528459549 Milestone Constructed May 1796 - Feb 1797 {"name":"Constructed","target":"","target_text":null,"date":{"#markup":"<span class='date'>May 1796<\/span><span class='separator'> - <\/span><span class='date'>Feb 1797<\/span>"},"date_start":"1796-05-01","date_end":"1797-02-01"} Type Mill {"name":"Mill","target":"","target_text":null,"date":{"#markup":"<span class='date'><\/span>"},"date_start":null,"date_end":null}