A substantial stone-built large public bath. It features an open-air bath with a panoramic view of the vast Pacific Ocean, the mouth of the Naka River, and the beautiful Kaimon Bridge, so you can soak while feeling the sound of the waves and the fresh sea breeze. The carefully heated sodium chloride cold mineral spring has a light brownish tint and is a soothing hot spring whose salt-based warming effect keeps you pleasantly warm long after you get out.

A large public bath with a comforting cypress bath that makes abundant use of cypress wood. The refreshing fragrance of cypress and the soft waters of Oarai Onsen come together to bring high-quality relaxation to both body and mind. The unobstructed view of the Oarai sea from the open-air bath is also beautiful, and this liberating cypress-built hot spring is the kind of place where you could soak forever while listening to the sound of the waves.