According to Welsh folklore, Merlin lives in an invisible tower of glass on Bardsey Island (off the Welsh coast). There he guards the 13 Treasures of the Island of Britain, including the fiery sword Dyrnwyn, King Arthur's invisibility cloak, and an enchanted chess set.#FairyTaleTuesday #Mythology #Folklore #Wales #Celtic #KingArthur #Arthurian #Merlin