Llanberis Slate Museum
   Known as the National Slate Museum, this is now a heritage centre sited in the Victorian workshops of the former vast Dinorwig Quarry, which was closed in 1969. Visitors can watch slate-splitting demonstrations and take a fascinating tour of the workshops, iron and brass foundry, forges, and loco shed. The museum also includes the largest working waterwheel in mainland Britain, and a row of four original quarrymen's houses rescued from demolition.
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