design a winter garden extension on the front fa ade of the building the structure should span the full width of the building and reach up to the window sill level of the first floor the fa ade of the winter garden should be fully glazed with floor to ceiling glass panels down to floor level using slim black metal frames include a glazed roof with a gentle slope lean to roof also in a black frame system the design should be elegant minimal and contemporary complementing the existing architecture materials glass and black metal frames lighting natural daylight style realistic architectural visualization