Helena architects Heinlein and Matthias designed this elegant European-style hotel, formerly the Windsor House. Built in 1888, it is Montana’s only known example of a prefabricated iron façade. The locally pre-cast façade represents a building trend popular in larger cities during this period. In 1889, House Republicans of the state’s first legislature regularly caucused in the hotel’s meeting rooms. The fourth-story ballroom features an oak floor once billed as the best dance floor in the West.