Prehistoric cultural affiliation(s) include Late Prairie Archaic, Early-Middle Archaic, Plains Woodland, Oneota and Upper Mississippian dating back to 8999 BC.
The famous person Horace Greeley McMillan is associated with one of more of the Lyon County historic places.
Some of the country's most noteable architects helped create the Lyon County places including John Olsen, W.S. Hewett, Western Bridge and Constuction Co., Iawo State Highway Commission, Joseph Schwartz, Iowa Falls & NW Railway Cedar Rapids and Charles B. Reynolds. Prominent architectural styles found in Lyon Country are Beaux Arts, Late 19th And Early 20th Century American Movements and Romanesque.