Blue Earth County Minnesota (Historic Districts) has 4 places on the National Register of Historic Places including 1 place of Statewide significance. Significant places include Minneopa State Park WPA/Rustic Style Historic Resources, Lincoln Park Residential Historic District, Main Street Commercial Buildings, North Front Street Commercial District.
Some of the country's most noteable architects helped create the Blue Earth County places including Nelsen,J.B. and & Co.. Prominent architectural styles found in Blue Earth Country are Late 19th And 20th Century Revivals, Late 19th And Early 20th Century American Movements and Late Victorian.