Sainokawara Open-Air Bath Travel Guide

Sainokawara Open-Air Bath (西の河原露天風呂) is a highlight of Kusatsu Onsen, one of Japan's most famous hot spring resorts. Located within Sainokawara Park, just a short walk from the town center, this expansive 500 square meter bath provides a unique opportunity to connect with nature while enjoying the therapeutic waters of Kusatsu.The park itself was once known as the "Devil's Fountain" due to the abundant hot spring water and steam. Today, it's a tranquil space with walking trails, foot baths, and monuments. The open-air bath is fed by the Bandai hot spring source and can accommodate up to 100 bathers. The waters are known for their acidic properties and are believed to alleviate various ailments.Each season offers a different backdrop, from snow-capped trees in winter to lush greenery in summer and vibrant foliage in autumn. At night, the illuminated pools create a magical atmosphere. On Friday nights, the bath offers a rare opportunity for mixed bathing (konyoku), where visitors can wear swimwear or cover-ups.