ニッポン城めぐり -お城×位置情報ゲーム・歴史ゲーム
"Nippon Shiro Meguri" is a stamp rally that uses GPS location data to visit 3,000 castles that actually existed throughout Japan, mainly during the Warring States period, including the 100 Great Castles of Japan and the 100 Greatest Castles of Continuing Japan. This application can be enjoyed by everyone, from those who love castles, history and the Sengoku period to beginners.