Just behind the pillars supporting the choir of the Miechów church in the main nave is a fragment of the western wall of the 13th-century Romanesque church, a defensive structure built of evenly cut, thick stone blocks. The remaining Romanesque wall is also the oldest part of the Miechów basilica. It was discovered in 1946 after the end of the World War II in connection with the work done by the then Miechów parish priest Rev. Jan Widłak, who decided to cut out a passage through the western wall of the main nave to the monastery part. This was when an old painting presenting depicting the crucifixion of Jesus Christ was discovered in a recess of the western wall. It is dated to before 1379. In the crucifixion scene, the cross with characteristic bent arms of the horizontal beam, called ‘the tree of life’ in the arts, with the body of Christ hanging from it, attracts particular attention. Three women are visible on the left side of the cross: Mary Magdalene, Mary Salome and, nearest to the cross, our Lady of Sorrows with her heart pierced by a sword. On the other side of the cross, you can see the apostle John and a preserved fragment of a hand holding a big sword. Researchers believe that the author of the crucifixion scene probably painted the image of Prince Jaxa, who founded the church. The adoption of the iconographic pattern current in the art at the time and the high artistic standard of the painting are indicative of erudition and knowledge of the contemporary European art, reflecting the prestigious position achieved by the Order. Above the niche with the Crucifixion scene is a window, called an oculus, with a beautiful rosette shaped as a four-leaf clover.