 A significant change in the fort 's conservation and preservation outlook was its declaration as a Historic <unk> under the Aboriginal and Historic Relics Preservation Act in 1972 . Up to then there had been growing awareness of the significance of the site in terms of the state 's colonial heritage . Control of the park was moved to the National Parks and Wildlife Service ( NPWS ) , and the fort and surrounds became designated as Fort Glanville Conservation Park . The National Estate Grants Program provided funds in 1975 for conservation work ; NPWS began this work in the same year and the caravan park boundary was moved southwards . Though the site had long been neglected , there was minimal permanent damage to its structure . During the 1970s reconstruction , much of the stockade was replaced . The replaced timbers are visibly different as they have shrunk significantly with large gaps that are not evident in the original timber . Adelaide City Council agreed to return the 64 @-@ pounder guns and new wheels were made ; replacing those <unk> over half a century before . In a ceremony on 2 October 1980 , the 100th anniversary of the guns first firing , one of the 64 @-@ pounders was fired again ; later a commemoration plaque was added to the fort 's flagpole 's base . Shortly after this firing the Fort Glanville Historical Association was formed , and was incorporated in 1981 . Fort Glanville was opened for public visitation in 1981 . 
