I remember reading somewhere, that the Aztecs built small windows in a specific way, on the top of the walls, in order to cool their houses. Does anyone have further info on that?
Mesoamericans as a whole, including nahuas, did not typically build windows. Some south American groups did, but not high up on walls or for cooling. Perhaps you're thinking of something else like mashrabiya?
I'm sure it isn't mashrabiya, it looked differently - it was thin (almost a horizontal slit), and I think its purpose was to "conduct" the hot air without letting the rain to come in.
