It's been nine years since J.K. Rowling finished writing Harry Potter and the Deathly Hallows. Rowling placed the finishing touches on the seventh Harry Potter book at the Balmoral Hotel in Edinburgh, the city where she lives. After finally completing her manuscript, she indulged in a little friendly vandalism to commemorate the occasion, a photo of which she tweeted Monday. Since 2007, fans have speculated and searched for the exact room in which Rowling finished the novel, which has since been named the J.K.