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Nagayu Onsen

Little knownBarely documented in English. This is the kind of place the site exists for.

조사·집필 Hinato

Nagayucarbonated onsentansanlong soakTaketa

Photo: Belle Equipe / Wikimedia Commons (CC BY-SA 3.0) · original

Nagayu Onsen (長湯温泉) in Taketa City is one of Japan's few naturally carbonated hot springs (炭酸泉, tansan-sen). The water contains high concentrations of dissolved carbon dioxide, creating tiny bubbles that cling to the skin like champagne — the bubbles improve blood circulation and give a tingling sensation.

The town's signature bathing style is 'long soak' (長湯, nagayu) — the water temperature is only 35–38°C (cooler than typical onsen), allowing hour-long soaks without overheating. The carbonation means even cool water creates warming effects.

기본 정보

영업시간

Gojoyu public bath: 6:00 AM – 9:00 PM.

휴무일: Open year-round. Ramune Onsen check for occasional maintenance days.

입장료

Gojoyu ¥500. Ramune Onsen ¥500. Day-bathing at ryokan ¥700–1,000.

베스트 시즌

Year-round; cooler seasons enhance the warming contrast of carbonated bath; autumn for forested riverside scenery

방문 소요 시간

1.5–2 hours for an extended carbonated soak (cool water allows longer 60-minute sessions)

가는 방법

교통 정보

Nagayu, Taketa City. A drive from Bungo-Taketa Station. Public bath: Gojoyu (御前湯, ¥500, 6:00–21:00). Day-bathing at ryokan: ¥700–1,000.

인사이더 가이드

**Drinking the water:** Nagayu onsen is safe to drink — a drinking fountain at Gojoyu offers free access. The water is mineral-rich (iron, calcium, magnesium) and slightly salty. Locals drink a cup before bathing (believed to enhance circulation effects). The taste is metallic but not unpleasant. **Riverside rotenburo:** Ramune Onsen (ラムネ温泉館, entry ¥500) has indoor and outdoor baths right on the Ono River — the outdoor bath allows floating in carbonated water while watching the river flow past. Architecture by Terunobu Fujimori (quirky modern design). **Extended soak strategy:** Bring a book or waterproof device — Nagayu's cool temperature makes 1-hour soaks comfortable (vs. 15-minute limit in 42°C regular onsen). The bubbles take 10 minutes to fully coat the skin, so patience is rewarded.

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