I see the OP is from Llandrindod! The problem, for me, with the museum, is that it's in Llandrindod - which is a nice town but fabulously inaccessible. On the few occasions that I am there (which is usually for CTC meetings), the train options are so limited that there is no possibility of hanging round and looking at things, especially if the opening times are limited. This is no reflection on the museum itself, which might well be wonderful!