II*Former Agent's House at site of Brymbo Ironworks On the hillside to the S of the old ironworks site at Brymbo, adjacent to the rail line to Brymbo Colliery. Access by track and then steps from the main level of the ironworks.
II*Pen-Rhos Engine House On the N side of the road running on the W side of the former Steel Works site, W of Pen-Rhos Farm.