Paulding County Ohio has 5 places on the National Register of Historic Places including 1 place of Statewide significance. Significant places include Paulding County Courthouse, Antwerp Norfolk and Western Depot, Paulding County Carnegie Library, Paulding Downtown Historic District and Round Barn.
Some of the country's most noteable architects helped create the Paulding County places including E.O. & Co. Fallis, Rudolph Ehrhart, St. Louis & Pacific Railroad Wabash and Howard & Merriam. Prominent architectural styles found in Paulding Country are Romanesque.