Square in a circle

Boulevard Belgica, Molenbeek

Round window posts are a challenge to renovate. The PVC frame above occupies more space then the window pane itself. A statement of the difficulty to find a proper solution.

Sometimes the rectangularity of the replacement frame is less apparent such as in the top window in the picture below. At other times it is even difficult to distinguish relatively well done renovations from intentional design. The picture at the bottom shows a seventies built house, with stylish blue window frames. Not sure if the blue round frame is original and the square is installed behind it at a later date. Maybe the architect foresaw trouble and integrated the square in the window design ?

Rue de la Meuse, corner rue Haeck, Molenbeek
Kapellaan, Woluwe Saint-Lambert