On of my biggest complaints about the Hemeroscopium house was its construction in Spain without a bit of shading on the windows. Architect Nicolás del Campo shows how it is done right, with his Casa Viguet in Buenos Aires. It has decent overhangs, a sliding louvre systems and fixed screens.
Portions of the wall are covered in perforated screens that used to be very popular in the United States, made famous by Edward Durell Stone, who sometimes got a bit carried away.
But simple screens like this can add interest, can control light, and add no small degree of security.
and, look very cool at night.