I'd put this on a "must-see" list for Krakow. Coronation and burial site for kings and others - and this was where Pope Paul II was ordained to be a priest. It's a miss-mash of different "add on" chapels built through time between the 14th century and now. Contains examples of Romanesque, Gothic, Romanesque, Baroque, Neoclassical and Neogothic architecture.