Turn immediately right as you come out of the Cathedral and you arrive at a modest building and a small, square front garden. This is the Cathedral Museum, opened by Archbishop Karl Wojtyƚa (1920–2005) in 1978 before becoming Pope John Paul II. Over two floors, you’ll find robes and regalia of sundry Polish kings—the brightest being the coronation robe of Stanisƚaw August Poniatowski (1732–98), dated 1764—and oddities such as four slabs from the 10th-century St. Gereon’s Church. Much of the top floor is given over to paraphernalia pertaining to John Paul II, either as Pope or as Archbishop of Krakow.