Prehistoric cultural affiliation(s) include Ute, Archaic, Mount Albion Complex, Pinto Complex and Late Prehistoric dating back to 6499 BC.
Some of the country's most noteable architects helped create the Eagle County places including U.S. Army, Missouri Valley Bridge Company, Colorado Department of Highways, D. W. Whipple, F.M. Kenney, King Burghardt, S. Broughton, Pueblo Bridge Company, Daniel B. Luten and S. E. Milner. Prominent architectural styles found in Eagle Country are Gothic Revival, Late 19th And Early 20th Century American Movements and Late Victorian.