Why would revellers carry a terrifying horse's skull on a pole door to door at Christmastime? Why is the cursed wall of Port Talbot protected by a global corporation for fear it might destroy the town? How did a Swansea genius help defeat Hitler by inventing a futuristic radar gun? Wales' history is packed with peculiar customs and curious characters. From the origins of the red dragon to the true identity of the Men of Harlech, this compendium of weird and wonderful facts will surprise even those who thought they really knew their country.