Painted in the 15th century, "The Madonna with Saint Giovannino" appears at first to be a typical Renaissance religious scene, but a strange detail in the sky has fascinated UFO enthusiasts for decades. Hovering in the background above Mary's left shoulder is a small, dark, disc-shaped object that appears to be radiating golden rays. Below it, a man and his dog can be seen on a cliff, shielding their eyes as they stare up at the mysterious object, an inclusion that suggests the artist intentionally depicted an anomalous aerial phenomenon.