Frederick is the subject of many legends, including that of a sleeping hero, like the much older British Celtic legends of Arthur or Bran the Blessed. Legend says he is not dead, but asleep with his knights in a cave in the Kyffhäuser mountains in Thuringia or Mount Untersberg at the border between Bavaria, Germany, and Salzburg, Austria, and that when the ravens cease to fly around the mountain he will awake and restore Germany to its ancient greatness. According to the story, his red beard has grown through the table at which he sits. His eyes are half closed in sleep, but now and then he raises his hand and sends a boy out to see if the ravens have stopped flying. A similar story, set in Sicily, was earlier attested about his grandson, Frederick II. To garner political support the German Empire built atop the Kyffhäuser the Kyffhäuser Monument, which declared Kaiser Wilhelm I the reincarnation of Frederick; the 1896 dedication occurred on 18 June, the day of Frederick's coronation.