The church’s stained-glass windows were made by Professor Adam Bunsch of the Academy of Fine Arts in Kraków. The ones in the chancel depict the Risen Christ and the Immaculate Heart of Mary. In the nave, we see the Holy Family and the beheading of Saint John the Baptist, and in the side chapel, the Guardian Angel guiding Stanisław Kostka and Jesus as the Good Shepherd. On the wall of the main nave we can see the Last Supper, painted in the 1980s to replace a more interesting and ambitious vision of the Baptism of Poland from the 1950s. The crypts under the church, the side chapel, and around the church were used to inter the dead until th^e end of the 18th century. Among those buried here are 30 Bar confederates, including one of the two marshals of the Bar Confederation, who fell in the battle with Suvorov’s army on May 23, 1771. On the walls of the church, there are also several epitaph plaques of Lanckorona burghers with inscriptions in Old Polish. The tombstone of burgher Teresa Liens from the first half of the 17th century, on the other hand, has an inscription in German, recalling the first group of German colonists who with the permission of King Casimir the Great of Poland founded the town here in the 14th century.