Nioson Plaza

鬼怒川温泉仁王尊プラザきぬがわおんせんにおうそんぷらざ

Lodging

Kinugawa Onsen

Kanto·Tochigi

0288-76-2721 niousonplaza.com

Day Use

Yes

09:00–21:00

¥700

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

Bathing Arrangements

Mixed BathingNo

Shared bathing area for all genders

Policies & Services

ParkingYes

On-site or nearby parking available

鬼怒川仁王尊の湯

Kinugawa Nioson no Yu

黄

Sulfur

Color: colorless and clear
Taste: tasteless
Odor: weak hydrogen sulfide

pH 9.6AlkalineHot source · 44°CSulfur-richStrongly alkalineHigh silica

Known good for

Skin conditionsatopic skin, eczema
Circulationtired legs
Aches & jointsstiff shoulders

Sensitive-skin cautionbroken or dry skin

Kinugawa Nioson no Yu is an alkaline simple sulfur spring. At the wellhead it reads pH 9.6 — strongly alkaline, with the slippery feel that places it squarely in Japan's beauty-water family. Dissolved solids are light at 280 mg/kg, so the water is gentle rather than assertive, but it carries hydrogen sulfide ion and a weak H₂S note is noticeable at the spout. Metasilicic acid at 52.1 mg/kg leaves a thin silica film that makes skin feel noticeably smoother afterwards.

Sampled at wellhead·Analyzed Jul 30, 2020·一般社団法人栃木県薬剤師会

Explore the water

Views

Forest

Highlights

Boat Bath

About

An older hotel in the Kinugawa Onsen area with multiple bathing options and views over the gorge. The mixed bathing here requires a bathing garment (湯浴み衣, yuamigi), which keeps things relaxed. The building is dated but the water and the views are genuinely good, and the setting above the river is hard to beat for the price.

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4.0

1 review

Sergey M

7 months ago

775. Nioson Plaza, Kinugawa Onsen, Tochigi ★★ A place with an onsen boat. I went for a higaeri for 700. Higaeri is listed from 09:00 to 21:00. Inside there is an area where you can fish. A few cats hang around nearby, and one of them cleverly snatched a fish that tourists had caught and ran off with it. There are three separate baths available: 1. Onsen boat. There is a view of the trees and the slope. The water is clear, temperature 38. 2. Corner outdoor bath with clear water. View of the trees through the fence. 3. Indoor bath. The water is clear, temperature 40. It is fine to breathe inside. A budget place in terms of condition, but original and memorable. Recommended for a visit. 11.01.2026