caption: The image shows a painting of St. Catherine of Alexandria and St. John the Baptist, painted by Giotto di Bondone. The painting depicts the two figures standing side by side, with St Catherine wearing a long, white robe and St John wearing a black robe. The background of the painting is a deep blue, with a golden halo around their heads. The figures are surrounded by a golden frame, giving the painting a regal and majestic feel.