Macquarie Watchtower Tower Octagonal sandstone tower at La Perouse built in c1821-22 to house troops assigned to watch for smugglers. Also known as Barrack Tower. Locate -33.9891314362, 151.23251295663 Milestone Constructed 1821 - 1822 {"name":"Constructed","target":"","target_text":null,"date":{"#markup":"<span class='date'>1821<\/span><span class='separator'> - <\/span><span class='date'>1822<\/span>"},"date_start":"1821-01-01","date_end":"1822-01-01"} Name Alternate Barrack Tower {"name":"Alternate","target":"","target_text":"Barrack Tower","date":{"#markup":"<span class='date'><\/span>"},"date_start":null,"date_end":null} Type Tower {"name":"Tower","target":"","target_text":null,"date":{"#markup":"<span class='date'><\/span>"},"date_start":null,"date_end":null}