abstract architectural backdrop background barrier basic brick brick-wall bricks brickwork cement colored coloring colors coloured colouring colours constructed exterior external firm linear lines mortar perspective perspectives secure security smooth solid standard strength strong style surface surfaced surfaces texture textured textures traditional-brick-wall variation varied various wall walled wallpaper well-built fitted large light patchwork rock-wall rocks rough rugged shaped shapes stone stones stonework sunlight sunshine uneven variations boat bollard dock iron isolated lash metal moor mooring rope ship steel tether tie ballast blue metal bolts gravel parallel rail rails rust shine sleepers stable tracks transport triple ancient arms Arthurian badge battle blade body button chrome classic classical clipart decoration design element empty England frame gothic graphic history icon illustration king king arthur medieval old one ornate path pattern power protection roman royal safety shadow shield shiny sign silver symbol three tool war white battlements castle cliff defence defense defensive Edinburgh fortifications fortress grey hill hilltop walls