The largest Baroque church in Krakow, dating from the turn of the17th/18th centuries was founded by professors of the Jagiellonian University and designed by the Dutch architect Tilman van Gameren. He designed the church in such away that the entire facade can be viewed from an arrow street. The collegiate church was the place of worship of St John Cantius – in the side altar is a sarcophagus with the relics of the saint. The fine stucco decoration by the Italian Baldassare Fontana, is especially noteworthy.