Saco is in the heart of the Milk River Valley. The Saco Chamber of Commerce and Agriculture Museum is located in a renovated one-room county schoolhouse; the Huntley School. The school was named after Chet Huntley who attended the school and went on to become a famous TV newscaster. Nearby Nelson Reservoir provides good fishing opportunities, swimming, boating, camping, picnic area and boat ramp. An area landmark is Sleeping Buffalo Rock, a boulder left behind by a glacier that once covered the region, resembles a sleeping buffalo and has many Indian legends attached to it. History: One of many stories about the town's name says that Saco is a contraction of "Sacajawea". The more accepted version is that, like so many other High Line station stops, this one was named by a Great Northern Railway official putting his finger to a spinning globe, which this time landed on Saco, Maine. In 1999, Saco residents broke the Guiness world record by making the world's largest hamburger, using beef from 17 cattle to form a 6,040-pound burger. The chefs cooked on a 24-foot pan built especially for the occasion, and the burger took 1 hour and 40 minutes to cook. (Unfortunately, the town held its records for only 2 years; the previous record holders in Seymour, Wisconsin, reclaimed the title with a 8,266-pond burger.) The local museum is in the Huntley School, named for news anchor Chet Huntley, who had attended school there. The H. Earl Clark Service Station and Saco Mercantile are listed in the National Register of Historic Places.