Perhaps the story of the young wizard would not have been written if it were not for a delayed train.
It was during the unexpectedly extended trip to London that Rowling came up with the general outline of the novel and the main character of the series.
Christmas trees became popular in Protestant Germany thanks to Martin Luther.
Luther distanced himself from the Catholic nativity scene, establishing the Christmas tree as a sign of Christmas. He recommended spending the holidays in the privacy of your home.