The Georgia Mountains cover the northern portion of the state, where the Appalachian Range extends for approximately 40 miles. Some of the most beautiful scenery in the state can be found here, as well as some great recreational activities including whitewater rafting. Cartersville boasts several worthwhile attractions. The Etowah Indian Mounds State Historical Site is of particular interest for history buffs, and the William Weinman Mineral Museum features a simulated mine tunnel and many geological artifacts. Rome is reminiscent of its Italian counterpart, and was similarly built upon seven hills. Attractions and historical sights, such as the Oak Hill and Martha Berry Museum, are scattered throughout the city. Another prominent attraction in Rome is the Clock Tower and Museum, which stands 104 feet tall and is visible from most vantages in the city. The city of Helen features a number of attractions as well, among them the Alpine Amusement Park, good for a family outing in the area.