I'm sorry if this is not the right forum to ask such a question, but I'm interested in finding out the name of a particular structure from a 15th-Century Gothic Church that is located in Saschiz, Romania.
The structure is indicated by the red arrow in the picture below. I know that clerestory window is the name we give to a window above eye level, but what about those tiny, square-looking openings just under the roof? What is their name? What are they for?
The picture was obtained from Wikipedia.