One of the largest open-air onsen in Japan 🇯🇵 This onsen near Tokyo - just over 2 hours away and nestled in the mountains - is one of the country's largest open-air onsen and surrounded by autumn colours 🍁🍂 If it's your first time trying onsen in Japan, the multiple single and mixed-gender outdoor springs beside the river require wearing a cover-up here. No need to worry about sharing your birthday suit with fellow bathers if you're not at that stage 😄 I loved my stay in the River View corn