Fort Vancouver was a 19th Century fur trade outpost owned by the Hudson's Bay Company along the northern banks of the Columbia River that later became its own city and the capital and only city in the Capital District of Oregon. As of 1818, the fort was agreed to be jointly held by the US and Britain. After the founding of the Commonwealth of Oregon, the cities of Vancouver and Boston grew up to the west and south of it, respectively, in the late 19th and early 20th century. The capital was later moved to the new planned city of Cascadia in 1974, along with the Capital District, putting Fort Vancouver within the borders of the State of McLoughlin. The fort itself is operated as a historic site by the Oregon National Committee of Historic Places.