The National Slate Museum is located at Gilfach Ddu, the 19th-century workshops of the now disused Dinorwic quarry, within the Padarn Country Park, Llanberis, Gwynedd. The museum is dedicated to the preservation and display of relicts of the Slate industry in Wales.
The museum is an anchor point of the European Route of Industrial Heritage and part of Amgueddfa Cymru – National Museum Wales.
Wikipedia https://en.wikipedia.org/wiki/National_Slate_Museum
Official Website https://museum.wales/slate/
Address (Unnamed Road), LL55 4TY, United Kingdom
Coordinates 53°7'15.222" N -4°6'54.865" E