architecture elements England english exit external fire escape Great Britain metal safety spiral stairs steps white aged background board boards decay grain old paint peel peeling plank planks surface texture weathered wood arc curved historical light shadow stone Sussex worn apartment balcony centre city development dwelling flats glasgow home modern river riverside scotland urban windows bronze copy copyspace door gate green iron ironwork keyhole shiny space ball blue Calton colonnade columns Edinburgh folly hill landmark Nelson sky time tower trees ancient barrier vintage wall appearances distorted distorted reflections flying-saucer-like reflections saucer-shaped street scene below unusual