Sullivan County Pennsylvania (Historic Districts) has 3 places on the National Register of Historic Places including 1 place of National significance and 1 place of Statewide significance. Significant places include Worlds End State Park Family Cabin District and Eagles Mere Historic District, Eagles Mere Historic District (Boundary Increase).
Some of the country's most noteable architects helped create the Sullivan County places including CCC Camp S-95, Aubrey Long and Horace McFarland. Prominent architectural styles found in Sullivan Country are Bungalow/Craftsman, Prairie School and Queen Anne.