Valley County Montana (Historic Districts) has 1 places on the National Register of Historic Places including 1 place of National significance and 1 place of Statewide significance. Significant places include Fort Peck Original Houses Historic District and Fort Peck Original Houses Historic District, Fort Peck Original Houses Historic District.
Some of the country's most noteable architects helped create the Valley County places including Drake & Piper Johnson and Madsen Construction Co.. Prominent architectural styles found in Valley Country are .
