One of the most famous old onsen in the area. The exterior and interior are of wood, and the main bath, though large, will unlikely hold up to 1000 people as it is famously claimed. The water is white and is reputedly good to treat reuma. The whole onsen smells of sulfur from the water, which adds to the charm once you get used to it. The large bath is open 24 hours and is one of the few remaining mixed-sex baths (be warned!), except 8-9am and pm when it is female only. It is near a nice short walk that takes you to a termal-heated wooded bench. Serious hikers can relax in this onsen after walking the Hakoda mountain. Rooms are Japanese style, and food is served in the room, ryokan style. Alternatively you can stay for a longer period and cook your own food in the cooking facilities.