Furuyu Onsen — relief & relaxation | Compare & book inns

Overview

Furuyu Onsen has a long history, with a legend stating it was discovered some 2,200 years ago by Jofuku, an envoy of Emperor Qin Shi Huang of China. Located in a quiet, serene mountain valley along the upper Kase River, about a 40-minute drive from central Saga City, it is known as the "Home of Tepid Waters." The water temperature, close to body temperature at around 38°C, is gentle on the heart and allows for long, leisurely soaks.

Extended bathing in these tepid waters helps activate the parasympathetic nervous system, guiding the body and mind into a state of deep relaxation. It has long been cherished as a place for balneotherapy, helping to reset from daily stress and fatigue and promote rejuvenation. The onsen is also famous as a place where the poet Mokichi Saito stayed for recuperation during the Taisho era, composing numerous poems.

Spring Quality and Benefits

The water is an alkaline simple hot spring, characterized by a very high pH of around 9.5. It is colorless, odorless, and extremely gentle on the skin, feeling as smooth as if you were soaking in a lotion. This high alkalinity provides a natural cleansing effect, helping to remove old skin cells and leaving your skin feeling exceptionally smooth after bathing.

• Autonomic instabilitySoaking in the lukewarm, 38°C water helps calm the body and mind. This gentle, prolonged bathing experience can ease stress and may help restore balance to the autonomic nervous system, which regulates involuntary bodily functions.
• InsomniaThe deep relaxation induced by the onsen's lukewarm water can help calm the mind and body before bed. This gentle, stress-reducing soak may make it easier to fall asleep and promote more restful nights.
• Depressive states
• Peripheral circulatory disturbance
• Sensitivity to coldTaking a long, unhurried bath allows the body to warm up gradually and deeply from the core. This sustained warmth can improve blood circulation, which may help alleviate chronic sensitivity to cold.
• Decreased gastrointestinal function

Water Characteristics and Best Season

The most distinctive feature of Furuyu Onsen is its "nuruyu" (tepid water), with temperatures ranging from 38°C to 40°C. This allows for prolonged bathing, warming the body to its core. Many facilities offer free-flowing spring water (gensen kakenagashi), allowing you to fully enjoy its fresh benefits. The tepid water is refreshing in summer and provides a lasting warmth in winter, making it enjoyable year-round. It is an especially ideal destination for those seeking a thorough, restorative spa experience in a tranquil setting.

Access

Nearby Sightseeing and Local Cuisine

• Kasegawa Dam (Fuji-Shakunage Lake): A dam lake with magnificent natural scenery.
• Mokichi Saito Memorial Museum: Exhibits materials related to the poet Mokichi Saito, who stayed in Furuyu.
• Kawakami-kyo Gorge: A scenic spot also known as the "Arashiyama of Kyushu," beautiful with cherry blossoms in spring and autumn leaves.
• Carp Cuisine (Koi Ryori): Local dishes like 'arai' (sashimi) and 'koikoku' (miso soup) made with carp from the clear Kase River.
• Saga Beef: One of Japan's top beef brands, available at local restaurants.
• Shiratama Manju: A beloved local sweet with smooth red bean paste wrapped in a rice flour dough.
• Furuyu/Kumanokawa Onsen Film Festival: An annual film event that livens up the onsen town.