The temple was designed by Bartłomiej Nathaniel Wąsowski , rector of the Jesuit College in Poznan. It is a three-aisled temple. Magnificent high altar and the entrance portal was designed by Pompeo Ferrari. Monumentality, pomposity, sculptures and painting make it a real Baroque gem. Every Saturday at 12.15 and in the summer every day (except Sundays), visitors can listen to a short concert of the famous Friedrich Ladegasr's organ.