The old Anaconda Copper Company smelter stack, completed on May 5, 1919, is one of the tallest free-standing brick structures in the world at 585 feet, 1.5 inches. The inside diameter at the bottom is 75 feet and at the top, 60 feet. The stack can only be viewed at a distance, the park itself is not accessible. Listed in the National Register of Historic Places. The elevation of the site is 5,410 feet and it is 12 acres in size. There are golf courses and museums nearby in Anaconda.