Ikaho Onsen — hot springs by indication | Compare & book 10 inns

Overview

Located in Shibukawa City, Gunma Prefecture, Ikaho Onsen is a spa resort with over 400 years of history. Its symbol is the 365-step stone staircase, which preserves the town's traditional atmosphere. Inns, souvenir shops, and restaurants line both sides of the steps, creating a lively scene of visitors strolling in yukata (light cotton kimono).

Ikaho's most unique feature is its two types of spring water: 'Kogane-no-yu' (Golden Water) and 'Shirogane-no-yu' (Silver Water). The former, which has been flowing for centuries, is rich in iron and turns a distinctive brownish color when exposed to air. In contrast, the more recently sourced 'Shirogane-no-yu' is clear and gentle on the skin. Experiencing both offers two different bathing pleasures.

Key Spring Qualities and Health Benefits

The 'Kogane-no-yu' is a Calcium/Sodium - Sulfate, Bicarbonate, and Chloride spring, also classified as an iron-rich spring. It is known for warming the body from the core and retaining heat. The 'Shirogane-no-yu' is a simple thermal spring containing metasilicic acid, which is mild and suitable for those recovering from illness and for the elderly.

• CutsThe mineral components in Ikaho's springs, particularly the sulfate-rich "Kogane-no-yu," are believed to have properties that support the skin's natural healing process. This may aid in the recovery from minor cuts and abrasions.
• Poor peripheral circulation
• Sensitivity to coldIkaho's "Kogane-no-yu" is a sulfate spring renowned for its ability to warm the body from its core. This quality helps improve circulation and retain body heat long after bathing, which may alleviate a chronic feeling of coldness.
• Dry skinThe "Shirogane-no-yu," a simple thermal spring rich in metasilicic acid, is known for being very gentle on the skin. Its components are said to have a moisturizing effect, which may help to hydrate the skin and alleviate dryness.
• Iron-deficiency anemiaThe "Kogane-no-yu" is classified as an iron-rich spring, which gives the water its signature brownish color. Iron-deficiency anemia is listed among the indications for iron springs in Japan.
• Autonomic instability
• Insomnia

Water Characteristics and Best Season to Visit

Thanks to its heat-retaining properties, Kogane-no-yu is also known as 'Kodakara-no-yu' (Child-bestowing water) and is said to help with sensitivity to cold. Shirogane-no-yu's gentle nature makes it ideal for long, relaxing soaks. Many facilities offer free-flowing spring water directly from the source. While enjoyable year-round, the area is particularly stunning in autumn (late Oct - early Nov) for its foliage, especially around Kajika Bridge, and in spring for its fresh greenery.

Access

Nearby Sightseeing and Local Cuisine

• Ikaho Stone Steps (Ishidan-gai): The town's symbol. A 365-step staircase to explore.
• Ikaho Shrine: Located at the top of the stone steps.
• Kajika Bridge: A picturesque red arched bridge, famous for autumn colors.
• Ikaho Ropeway and Mt. Haruna: Enjoy panoramic views from the summit.
• Mizusawa Udon: One of Japan's three famous types of udon noodles, known for its firm texture.
• Yuno-hana Manju: A brown steamed bun filled with sweet bean paste, said to have originated in Ikaho.
• Ikaho Green Bokujo: A farm where you can interact with animals and enjoy activities.