It’s Poland’s Westminster Cathedral, the absolute focal point of the country’s religious history, crowning place of kings and queens and architectural overseer of the famous Cracovian gothic skyline. Wawel Cathedral sits in the heart of the royal palace and castle complex that dominates the hill of the same name, on the south side of Krakow’s old town.
http://visitkrakow.com/city/the-wawel-cathedral/