According to tradition, the hill known today as sw. Wojciecha (St Adalbert) Hill was where bishop Adalbert preached in 996-997 before becoming a martyr and the first church was built here in 1222. Today's church was built in the 15th century as a single nave Gothic edifice and the side naves were added in the next century. At the turn of the 16th century the church was provided with Renaissance gables and extended by St Anthony Chapel in the south. The interior is adorned with secessionist polychromy by Antoni Procaj³owicz from 1911-12. The high altar - stylised to make it look Gothic - dates from 1953. In its central compartment there is a 15th century Gothic relief of Ascension of Virgin Mary, attributed to a Wit Stwosz disciple. In the side naves there are three late Renaissance altars. One of the attractions of the church is the Nativity with the crib from Bethlehem and 102 statues featuring Polish kings and heroes, eminent scientists, writers and musicians.