Porteous, Mitchell and Braun Company Building, Portland

The Miller Building, also known as the Porteous, Mitchell, and Braun Company Building, is a historical structure in Portland's Arts District. It showcases Renaissance Revival architecture and housed Portland's largest department store. It was listed in the National Register of Historic Places in 1996.

This five-story building has a steel frame with brick walls adorned in limestone-colored terra cotta. The ground floor showcases a modern design with glass and stone, topped by a marquee identifying its current occupant, the Maine College of Art. The second to fourth floors are divided into six bays with fluted pilasters, each featuring a three-part window arrangement. Decorative panels adorn the spaces between floors. The top floor stands out with a cornice and six bays housing three round-arch windows. A corbelled cornice adds a final touch to the structure.

Originally built in 1904 by architect Penn Varney, the building was commissioned by Portland's Watson, Miller & Company. It was expanded in 1911 after Porteous, Mitchell, and Braun took over the firm. Architect George Burnham unified the facade. More expansions followed, extending the building to Free Street by 1953. The Porteous, Mitchell, and Braun Company operated here until 1991 as the city's top department store. It was later restored and repurposed for the Maine College of Art.