The Fort Benton Historic District is a National Historic Landmark District encompassing the historic waterfront areas of Fort Benton, Montana. Founded as a fur trading post at the head of navigation of the Missouri River, it was prior the advent of the railroad one of the nation's largest inland ports, playing a pivotal role in the development of the American and Canadian West. The Front Street and waterfront area of the city preserves elements of this history. It was designated a National Historic Landmark in 1961, although its boundaries were not formally determined until 2012.