Collingsworth County Texas has 2 places on the National Register of Historic Places including 2 places of Statewide significance. Significant places include State Highway 203 (Old TX 52) Bridge at Salt Fork of the Red River and US 83 Bridge at the Salt Fork of the Red River.
Some of the country's most noteable architects helped create the Collingsworth County places including Texas Highway Department, Pittsburgh-DesMoines Steel Co. and Resident Engineer: Thomas B. Potts. Prominent architectural styles found in Collingsworth Country are .