Not technically 'windows' I suppose, but I'm adding these brise-soleil by Le Corbusier to #FensterFreitag because they are elements of the facade that bring in light and air, and they do frame all views out of the buildings...
Tenuous justification? ME?? Ach, for all his faults, Le Corbusier is also responsible for some of the most transcendentally beautiful spaces I've ever experienced.