Right on the Town Hall Square, in the city centre, there is the oldest temple in the town - a unique combination of art styles and different Christian traditions. Built in the fourteenth century under the monastic state of the Teutonic Knights as the Catholic Church, since the Reformation until the late 50's of the twentieth century it served to the Protestants. Now the Greek Catholics are praying there. With them, in the gothic walls the Byzantine tradition appears: iconostasis, frescoes, Cyrillic. The author of the iconostasis is a prominent Polish painter, Jerzy Nowosielski. From the earlier rich, Baroque interior of the temple, it is still possible to admire the wonderful, large ceiling fresco painting from the year 1660, illustrating the biblical scenes and events of Jesus' life.