The Montana National Bank, the first bank chartered in Montana Territory, was located on this site in 1866. A housing shortage during the 1880s prompted the construction of this three-story rooming house in 1887. The French Second Empire-inspired style features a straight mansard roof with caboose dormers and heavily pedimented windows. The first floor originally housed small shops, then served as a warehouse for the Kessler Brewery. Weggenman’s Market occupied the space from the 1940s until the building was extensively remodeled during Urban Renewal in the early 1970s.