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Aqua Ignis

アクアイグニスアクアイグニス

Bamboo-grove open-air baths and kakenagashi onsen in a large resort complex

Lodging
Kansai·Mie

Day Use

Yes
06:00–00:00
¥600

Adults (middle school and up) weekdays 600 yen / weekends & holidays 800 yen; children (age 3 to elementary school) weekdays 300 yen / weekends & holidays 400 yen; under 3 free

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

SaunaNo

Sauna room of any kind

Bathing Arrangements

Room OnsenYes

Private onsen bath in guest rooms, for overnight guests only

Mixed BathingNo

Shared bathing area for all genders

Policies & Services

TattooNo

Allows entry with visible tattoos

KidsWith Conditions

Welcomes children and families

Children aged 3 and up may use the baths. Under 3 may not enter the tub (baby bath provided). Children may use mixed-gender bath up to 120 cm / under age 7.

DiningYes

A restaurant or dining room open to visitors, not only meals for overnight guests

WashingYes

Shower, wash stations, soap and shampoo provided

TowelsYes

Towels to rent or borrow at the desk

ParkingYes

On-site or nearby parking available

湯の山片岡温泉

Yunoyama Kataoka Onsen
湯
Simple
Color
Colourless and clear
Taste
A faint carbonated tang
Odor
Odourless

Sodium Bicarbonate-Chloride spring

pH 8.5AlkalineHot source · 45°C
Composition fingerprint0.5 g/kg dissolved · Hypotonic
Na⁺96
HCO₃⁻58
Cl⁻36
◀ CationsAnions ▶
Sodium Na⁺
salt's cation — pairs with chloride to make the water salty.
Bicarbonate HCO₃⁻
"soda" — softens skin, leaves it smooth.
Known good for
  • Aches & jointsstiff shoulders
  • Smooth skindry, rough skin
  • Recoveryfatigue, stress

An alkaline simple thermal spring (Yunoyama Kataoka Onsen in the foothills of Yunoyama) with a softly slippery, beauty-water character — pH 8.5 at the wellhead is enough to give the skin that characteristic slip. Lightly mineralized at 0.54 g/kg dissolved solids, the water is gentle on the body, with a faint carbonated tang on the tongue that the certificate notes both at the wellhead and three days later in the lab.

Sampled at wellhead·Analyzed Nov 29, 2011·三重県保健環境研究所

Explore the water

Highlights

Steam Sauna

About

The onsen section, Kataoka-onsen (片岡温泉), runs indoors and in a bamboo-grove open-air bath on fresh kakenagashi flow with no dilution or recirculation. For staying guests, the detached organic villas each come with a private open-air bath on the same kakenagashi source. The wider complex adds two celebrity-chef restaurants (Italian and Japanese), a bakery, patisserie, strawberry farm, and Le Furo, a mineral stone room that delivers a low-heat infrared warmth rather than a conventional sauna.

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4.0

1 review

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Sergey M
2 years ago· edited

52. Aqua Ignis, Yunoyama Onsen ★★ An onsen complex with lodging, a cafe, food, relaxation areas, and massage. It also has some extra activities with a farm and a few other things, beyond the onsen itself. For Yunoyama, this kind of trendy, youth-oriented complex feels very unexpected. Literally 15 to 20 minutes on foot from the complex, you can find abandoned buildings, and a large industrial bridge runs right next to it. I went for a day trip. It is open from 06:00 to 24:00. I paid 900 for admission plus a large and a small towel. Around 22:00 there were quite a lot of people, but there was still enough space and it was good. I did not see any foreigners, and there were not many old men. About the baths: 1. In the indoor area, there is one large hot bath with clear water. There is a light smell. It is easy to breathe. 2. The outdoor area consists of a small garden with short bamboo in the center and three baths around it under individual roofs: 2.1. A sitting bath with a view of the garden and the bridge. 2.2. A reclining bath with a view of the garden. It is a bit small for big guys, since you cannot keep your chest underwater. 2.3. A medium-sized round regular bath. Also with a view of the garden. The water in all the outdoor baths is clear, and the temperature is a little milder than in the indoor bath. In the evening, hanging out in these baths and zoning out while relaxing and looking at the garden with the thin bamboo, which is trying to withstand the strong wind, is really great. If you are going to Yunoyama, this is a place that is highly recommended to visit. Given the excellent opening hours, you can do it almost whenever you want. 09.04.2024

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Last updated October 11, 2026