Narukami Onsen

In the Nanayama area of Karatsu City, on the nature-rich Narukami hill, lies Narukami Onsen, a day-use bath known locally as Nananoyu. Its high-alkaline water, said to be among the strongest in the prefecture, is soft and silky, celebrated as a beautifying bath that leaves the skin smooth.

Highlights

The greatest draw is the smooth touch that only a high-pH alkaline simple thermal spring can offer, and the slippery feel of the water is a delightful surprise. Alongside open-air and large indoor baths, there are bubble baths, jet baths, reclining baths, and saunas, so you can relax however you like. The quiet mountain setting is perfect for refreshing yourself far from urban bustle.

Enjoying the Seasons

Spring brings cherry blossoms and fresh greenery around Nanayama, while summer draws visitors seeking cool air alongside play in the nearby clear stream. Autumn colors the surrounding hills beautifully, and winter is the season to warm up thoroughly in the spring. Surrounded by nature through the seasons, it is also popular as a stop on a scenic drive.

Access and Basic Information

The spa lies in the Nanayama area, easy to reach by car from central Karatsu or the Fukuoka direction. A dining area is attached, so even a day trip allows a leisurely stay. Being in the hills, public transport is limited, so coming by car is recommended.

A Quick Tip

The water is quite slippery, so even those with sensitive skin can enjoy the moist feel after bathing. Dropping in mid-drive to combine a meal and a soak is a recommended way to spend the time.