Tamagawa Onsen

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Akita · Tamagawa OnsenTattoos: Ask ahead

Shin-Tamagawa Onsen

A modern cure-bath inn fed by Tamagawa Onsen, Japan's most acidic spring at pH 1.2. The hiba-cypress bathhouse lines up 15 tubs — 100% source, 50% diluted, mildly acidic and more — so you can choose by condition. Day use 10:00–15:00, ¥1,000 (revised April 2026). An indoor stone-slab bath (¥800) is also available, and unlike the original Tamagawa it stays open all winter for snowbound soaking. About 70 min by bus from Tazawako Station.

Day-trip onsenOnsen ryokanDay use ¥1,000

Akita · Tamagawa OnsenTattoos: Ask ahead

Tamagawa Onsen (Main Hall)

A leading toji spa of Japan, where a strongly acidic spring of pH 1.2 rises. Hokutolite, a mineral found nowhere else in the country, sits here along with outdoor rock bathing, a nature study path and the steam vent called Obuki, so the culture of curative bathing comes through intact. Day bathing is 1,000 yen for adults and 500 yen for children, accepted 10:00 to 15:00 with last entry at 14:30, and the large rest hall is 1,500 yen. Being a snowy highland, it opens only from mid-April to late November.

Onsen ryokanNatural hot springDay use ¥1,000