Penydarren is a community and electoral ward in Merthyr Tydfil County Borough in Wales.
Full-scale replica of Trevithick's 1804 steam-powered railway locomotive in the National Waterfront Museum, Swansea.
Penydarren Ironworks was the fourth of the great ironworks established at Merthyr Tydfil in South Wales.
Penydarren iron works, 1811
The lowest bridge over the River Ogwen, is a private bridge within the walls of Penrhyn Park bears the inscription Penydarren Ironworks Glamorganshire