783. Kogane no Yu, Ikaho Onsen, Gunma ★★ Onsen for ¥1073. The listed hours are 10:00 to 22:00. The bath photos online only partly match, there was much more steam in the indoor bath, and the evening images online are pretty poor. I visited the onsen on an evening in January. Apparently several factors lined up at that moment, inside the bath it was dark and there was a lot of steam from the water. If you sit in the main bath facing the showers, there is direct light through the steam from the lamps hanging above the showers in the onsen. But because of the distortion of the light by the steam and the overall darkness in the room, it created a surreal visual effect. People walking between the bath and the lamps looked like black figures without detail, suddenly appearing from nowhere like drawings and then disappearing again. It looked like some kind of animation in real life. 1. Open-air bath. There is no view, and there are penguin figures by the bath. The water is clear, temperature 42.5. 2. Indoor area. Breathing inside is fine. 2.1. Main bath with clear water, temperature 40.5. 2.2. Additional bath with cloudy orange-brown water, temperature 39.5. The place made an impression mainly because of the lighting conditions and steam in the indoor bath, but it is still worth recommending trying to catch the same unusual effect in winter. 11.01.2026