Atami Castle is located on the top of Mt. Nishikigaura. The observatory in its tehnshu-kaku (donjon) commands a view of the whole of Atami. Atami is likened to a Monaco in the orient for its resort hotels and beautiful marine views. On a clear day, it is recommended to enjoy views while soaking your feet in the footbath on the first floor (free of charge).
This open-air bath is right next to Shirahama Beach. Since you can wear a swimsuit while soaking in this pool-like bathtub, it's convenient to visit after a day at the beach. The hot water that springs from its own source is constantly replenished, ensuring the water is always fresh. During the non-summer seasons, it's used as a footbath instead.