Kusatsu Sanyū Meguri

Kusatsu Onsen's ちょいな三湯めぐり手形 is a postcard-shaped wooden pass issued by the town of Kusatsu, giving one entry each to the three municipal day-use bathhouses — all of them 源泉かけ流し (pure source-water, no recirculation, no added water). The pass has no expiration — you can space the three visits across different seasons, different trips, even different years.

The three baths

Goza-no-Yu sits across from the iconic yubatake (hot-water field) in two wooden bathhouses styled after Meiji-era Kusatsu. Ōtaki-no-Yu is the largest of the three and keeps the famous awaseyu tradition — stepping through five successively hotter tubs. Sainokawara Rotenburo is a vast open-air bath carved into the rocks of Sainokawara Park, one of Japan's largest rotenburo. All three draw from Kusatsu's legendary sulfuric springs (pH ~2), one of Japan's most acidic and bactericidal spring waters.

How it works

1. Buy the tegata (¥1,950 adults / ¥900 children) at any of the three facilities
2. Use it once at each facility, in any order — the reception stamps your tegata on entry
3. At the last of the three, show your fully-stamped tegata and receive the 完湯認定証 (Kantō Ninteisho — "Complete Bathing Certificate") plus an original logo sticker
4. The tegata itself is a postcard-format souvenir

Compared to paying each bath's individual rate (¥2,700 total), the tegata saves ¥750 and gives you the certificate at the end.

Earning the Onsen Oni badge

The Kusatsu Sanyu Meguri badge is awarded by Onsen Oni moderators to users who have completed the three-bath tour and received the 完湯認定証. Send a photo of your completed tegata and/or the certificate through the feedback channel. Because the pass has no expiration, your three visits can span any span of time. This is a one-time lifetime badge.

Sources

• 草津温泉 源泉かけ流し日帰り温泉 — 草津三湯
• 草津町 — ちょいな三湯めぐり手形