Spirit in the sky
At first glance, you can see an ordinary Renaissance painting. It would seem a typical representation of some biblical passage of Christian importance. Yes, you can appreciate all the details, colors, and effort poured into the painting, but sooner or later, you will see it.
On the right, you can see an object in the sky. It looks pretty much like what we nowadays call a UFO or a flying sausage. How did a painter in the 1400s choose to paint something like that, when only birds lived in the sky. Or it could be some representation of the holy spirit? We’ll never know.