From a Government of Canada website: "The site is composed of two late-18th century forts: Fort Augustus, established by the North West Company from 1794 to 1795, and Fort Edmonton, established by the Hudson’s Bay Company in 1795. The forts sit almost immediately adjacent to each other in an open field beside the river, marked by a Historic Sites and Monuments Board of Canada plaque and cairn. There are no known above ground remains of either fort. Official recognition refers to a polygon enclosing the designated lot."