architecture background drystone elements England english Great Britain rough stone texture wall wiltshire ba1969 canvas concrete rock surface watercolor abstract architectural barrier basic coloring colors colouring colours constructed exterior external firm fitted large light lines patchwork perspectives rock-wall rocks rugged secure security shaped shapes solid stones stonework strength strong style surfaces textures uneven variations various wallpaper well-built ancient forest old source spring summer water window angles appearance building contemporary contrast contrasting distinctive edged edges geometric geometric-shapes height high high-rise linear modern patterned patterns pointed sharp skyscrapers textured unusual views walls backdrop backgrounds blocks chipped chiseled historic limestone mortar patched perspective variety walled grunge paper scratched scratches weathered block block glass glass glass wall privicy glass textured glass cabin grain knots log norway planks red wood wooden bamboo cane fence line parallel brown dappled decoration decorative desktop golden grey ocher pastel plastering structure structures stucco