Just about everyone took a photo of this pigeon house. It was one of larger ones and well preserved. Pigeons were Housed away from the water supply to the house and animals, to avoid contamination from guano. Their guano was prized for fertilizing the white wine vineyards, young pigeon meat was sold at a premium price and these were messenger pigeons, used for communication. So valuable were these that they could be used as a dowry in the 1500’s, or thereabouts.
At first I thought it was for food storage, but the church gift shop had a book, in English, about them.