Judging from the foliage on his shoulder, MASSIVE HAIRY BALLS.great comment: 'The picture was taken from the torso up to tastefully hide the size of his MASSIVE BALLS.'
Could be that they have filled in the entrance to a Culla per la vita (Baby Hatch) if it was a nunnery door, but I'm looking at the frame its set into, that looks far to modern, and although blurred the hinges certainly are not medieval, the door sill as well is straight while the stone step it is set over is curved from centuries of wear. So it could be original to the location, just had repair work done.It also looks like it's had a section replaced at the bottom and not a recent one since it shows as much age as the rest of the door and old enough that the aging of the wood has opened up a noticeable seam between the sections.