Kato Shrine used to be at where Fujisaki Dai baseball stadium is now, but during the Meiji Restoration, the shrine was moved inside the castle grounds proper. This left an empty space, which was filled by the stadium. It really must be one of the most beautiful stadiums in Japan, with excellent views of Mt. Kimpo and 400-year old camphor trees (kind of a funny kanji - “kusunoki” ends up being one: 楠) behind it. I’d strongly suggest a stroll behind the stadium to admire the trees. - William