Waterfront Park is a coastal park with Atami Port as its center. The breeze blows and you can overlook Atami Castle in the distance. Atami Water Park is a free bathing beach. Visitors can swim in the water for free without paying. There are shower facilities next to it, but you need to bring your own toiletries. Atami Castle is not far from here, and you can overlook it from a distance. Atami Castle.