Kannawa Steam Bath - A Tattoo-Friendly Hot Spring in Beppu Onsen, Oita

The herb hits you first. Step through the low doorway of Kannawa's mushiyu and the scent of sekisho — Japanese sweet flag, spread fresh across the stone floor — fills the chamber before the heat does. You lie down on the herbs in a borrowed yukata, and for the next ten minutes, geothermal steam rising through the floor does what an ordinary bath never could.

Kannawa Steam Bath is not a typical onsen. It's a mushiyu — a stone-chamber steam bath heated by underground volcanic vents, a bathing method dating to the Kamakura period. The chamber holds four people per side, staff set a timer, and the session runs eight to ten minutes. Afterward, you rinse off the herbs and sink into a small communal soaking bath fed by the local spring. The whole visit moves quickly, but the deep-heat effect stays with you the rest of the day.

If you're in Beppu and want something that doesn't exist anywhere else on your Japan trip — not another soak, but a completely different way to experience hot spring energy — this is the one. Tattoos are accepted throughout the facility, no covers, no questions.

• Mushiyu, Not a Bath: A Kamakura-era steam bathing method — you lie on medicinal herbs in a volcanic stone chamber while geothermal steam heats you from below. Nothing else in Beppu works like this.
• Tattoos Accepted Throughout: Confirmed tattoo-friendly by Oita Prefecture tourism authorities — no covers, no patches needed in either the steam chamber or the communal bath.
• Kannawa's Steam District: The surrounding onsen town is itself the attraction — steam rising from streets, volcanic cooking stations, and centuries-old bathhouses within walking distance.
• A Complement, Not a Replacement: The mushiyu session runs under thirty minutes, making it easy to pair with a longer soak at another Kannawa bathhouse the same afternoon.

The heat finds you before you settle in. The stone chamber sits low — you duck through a small wooden door to enter — and the sekisho herbs spread across the floor release a sharp, grassy sweetness as geothermal steam rises through them. You lie face-up on a stone pillow, yukata damp within seconds, sweat starting before you've finished adjusting.

Staff knock at eight minutes and offer two more. Most people take them. When you step out, the communal bath — a deep, simple tub fed by the local spring — hits different on skin that's already flushed and open. The water is warm and saline, and the tub is deep enough to soak to your shoulders immediately. Outside the entrance, a free foot steam bath is worth the stop on the way out, especially after walking Kannawa's slopes all morning.