Union County South Carolina (Historic Districts) has 6 places on the National Register of Historic Places including 4 places of Statewide significance. Significant places include Buffalo Mill Historic District, East Main Street--Douglass Heights Historic District, South Street--South Church Street Historic District (Boundary Increase) and Union Downtown Historic District and South Street--South Church Street Historic District.
Some of the country's most noteable architects helped create the Union County places including Whaley,W.B.Smith and & Co.. Prominent architectural styles found in Union Country are Late 19th And Early 20th Century American Movements, Late 19th And 20th Century Revivals and Late Victorian.