と同様のハッシュタグ #castles
ハッシュタグを投稿に入れるか、投稿の下の最初のコメントとして。
#castles #castles_oftheworld #castlesofinstagram #castlesofbelgium #castlesofeurope #castlesoftheworld #castleshoot #ilovecastles #sandcastles #europeancastles #churchesandcastles #castlesphotography #tourdecastles #lovecastles #europecastles #castlesinbelgium #castlesandcarbs #magical_castles #belgiancastles #castlestyle #igerscastles #fakecastles #buildingsandcastles #oldcastles #worldwide_castles #royalcastles #tourthecastles