Lake County Colorado (Historic Districts) has 6 places on the National Register of Historic Places including 1 place of National significance and 2 places of Statewide significance. Significant places include Leadville Historic District, Interlaken Resort District and Twin Lakes District, Derry Mining Site Camp and Hayden Ranch Headquarters.
Some of the country's most noteable architects helped create the Lake County places including H. A. W. Tabor, John Weir, Francis hayden, New York Engineering Co. and Samuel Derry. Prominent architectural styles found in Lake Country are Late Victorian.