The condition of Prince Philip, who is in hospital with a bladder infection, has "improved considerably" and he is in "good spirits," Buckingham Palace in London said Wednesday. According to dpa, the 90-year-old husband of Queen Elizabeth II would remain in the private Edward VII hospital for the next few days. He was taken ill at the height of national celebrations to mark the queen's 60-year-reign over the weekend, and hospitalized Monday.