1 Best Sight in Helena, Bozeman, and Southwest Montana, Montana

Built in 1905 by architect Cass Gilbert, who also designed the United States Supreme Court Building, the Montana Club was once the tallest building in the state. It's notable for its stone archways and contemporary I-beam construction underneath its classical facade. Founded in 1885, the Montana Club is the oldest continuously operating club between Minneapolis and Seattle. Once private, it's now open to the public for dinner and Sunday brunch.