isometric low poly japanese castle.

fortress defence cute japan element design city tourism icon high flat beautiful decorative illustration nature grey east medieval kingdom door citadel architecture culture isolated green object palace building facade concept land fortification wall cartoon frame flag construction fort outdoor stone historic journey house game exterior landscape asian symbol roof travel fortified fantasy king royal built japanese tower island art block graphic place business estate rock samurai fairytale 3d temple old castle gate background vector stronghold cityscape ancient isometric