Col Alto is a historic home located at Lexington, Virginia. The original section was built about 1827, and is a two-story, double-pile, three-bay, Georgian style brick dwelling with a hipped roof. In the 1930s, the house was remodeled, enlarged, and modernized by noted architect William Lawrence Bottomley. Bottomley added the distinctive Palladian style verandah. Also on the property are a contributing barn and log cabin. Col Alto was the home of Congressman James McDowell (1795-1851), for whom the house was built, and Congressman Henry St. George Tucker III (1853-1932).