Menard County Illinois 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 Lincoln's New Salem Village, Lincoln's New Salem Village and Petersburg Historic District, North Sangamon United Presbyterian Church and Petersburg Historic District (Boundary Increase).
The famous person Abraham Lincoln is associated with one of more of the Menard County historic places.
Some of the country's most noteable architects helped create the Menard County places including Aaron Thomas White and Charles Thatcher. Prominent architectural styles found in Menard Country are Greek Revival, Early Republic and Federal.