Until 1411 the church served as a substitute cathedral (after a fire in 1329 of the Romanesque temple by the Teutonic Knights). In 1569, it was designated for the seminar Church (performs this function to this day). In 1843, it was connected through the western wall with the seminar building. The main altar of the Church houses a priceless masterpiece of Gothic art - a triptych of 1460 presenting the coronation of the Virgin Mary.