Situated in northwest Alexandria, the Rosemont Historic District is a lushly planted residential area occupying some 84 acres. It was developed between 1908 and 1914 by a group of Washington, Alexandria, and Philadelphia investors. The houses were built near the trolley line, allowing residents to work in Washington, D.C., and live in a suburban neighborhood, a housing pattern repeated across the nation. While the houses represent the work of many architects and builders, as a group they achieve a remarkable level of cohesiveness in scale and building materials. Rosemont’s more than 450 residences form a textbook of the era’s middle-class architecture. House styles range from the picturesque coziness of Arts and Crafts and Craftsman to the staid dignity of the Colonial Revival. The intact original street plan of the Rosemont Historic District reflects suburban planning ideals of the early 1900s City Beautiful movement.