Margam Stones Museum is a small Victorian schoolhouse near Port Talbot, South Wales, which now provides a home for one of the most important collections of Celtic stone crosses in Britain. All originally found within the locality of Margam, and mostly assembled as a collection in the 19th century, they provide enduring testimony to a Welsh Christian culture between the 6th and 16th centuries. The striking Cross of Conbelin is the most celebrated example.