broznze defense gold metal shape shield silver steel building castle construction old stone wall army fortress modlin protection walls windows yard cross heart ok pictogram sign background boulder defence flood red rock texture weathered angles appearances architectural architectural elements architecture battlement carnels corbels crenellation crenels decorative decorative-battlements defensive-architecture defensive-wall extended-outwards fort fortification masonry-structure merlons ornamental ornamentation parapet ramparts segment supported supporting-corbels supports wall-segment wall-tower arms criminal danger fire weapon gun military power warning weapon bunker cannon soldier war window