Mt. Kiyama

Mt. Kiyama stands as an ancient mountain castle, proudly holding the title of a nationally designated historical site.
As you wander through the mountainous terrain, you'll come across scattered stone artifacts known as Horoso-ishi and Manaita-ishi, hinting at their possible role as foundation stones for various castle gates.
But the real treat awaits at the summit, where an observatory provides a stunning panoramic view of the cityscape and the majestic Seto Inland Sea.