Ōsama no Yu
A luxurious natural hot spring flowing from 1,500 m underground. This mildly alkaline sodium chloride hot spring feels silky on the skin, and the comforting warmth continues long after bathing, making it a skin-beautifying bath.
ไซตามะ เมือง Shiki
Enjoy the ultimate relaxation with an upgraded sauna and natural flowing hot spring water straight from the source
"O-furo no Ōsama Shiki Branch" is a leading day-use hot spring and bathing facility in Shiki City, Saitama Prefecture, which underwent a major renewal in January 2025. The "Ōsama Onsen" that springs from 1,500 m underground is a mildly alkaline sodium chloride hot spring with excellent heat-retaining and moisturizing effects. The sauna facilities have been greatly upgraded, with two new options on the men’s side: a large sauna with automatic löyly and a tornado sauna where self löyly is followed by powerful heat waves. The women’s side also offers an automatic löyly sauna and a moist salt steam bath. Other highlights include a crisp cold plunge bath made with binchotan charcoal, outdoor air baths on the open and spacious "totonoi deck," a variety of open-air baths, and an expanded rock bath area. It is a well-equipped facility where you can relax all day long.
A luxurious natural hot spring flowing from 1,500 m underground. This mildly alkaline sodium chloride hot spring feels silky on the skin, and the comforting warmth continues long after bathing, making it a skin-beautifying bath.
A six-tier stadium-style sauna. Automatic löyly activated at regular intervals surrounds the entire body with powerful heat. The top tier has a bed seat for one person, allowing you to lie back and luxuriate in the heat.
วันหยุดไม่แน่นอน
ไซตามะ เมือง Shiki
Enjoy the ultimate relaxation with an upgraded sauna and natural flowing hot spring water straight from the source
"O-furo no Ōsama Shiki Branch" is a leading day-use hot spring and bathing facility in Shiki City, Saitama Prefecture, which underwent a major renewal in January 2025. The "Ōsama Onsen" that springs from 1,500 m underground is a mildly alkaline sodium chloride hot spring with excellent heat-retaining and moisturizing effects. The sauna facilities have been greatly upgraded, with two new options on the men’s side: a large sauna with automatic löyly and a tornado sauna where self löyly is followed by powerful heat waves. The women’s side also offers an automatic löyly sauna and a moist salt steam bath. Other highlights include a crisp cold plunge bath made with binchotan charcoal, outdoor air baths on the open and spacious "totonoi deck," a variety of open-air baths, and an expanded rock bath area. It is a well-equipped facility where you can relax all day long.
A luxurious natural hot spring flowing from 1,500 m underground. This mildly alkaline sodium chloride hot spring feels silky on the skin, and the comforting warmth continues long after bathing, making it a skin-beautifying bath.
A six-tier stadium-style sauna. Automatic löyly activated at regular intervals surrounds the entire body with powerful heat. The top tier has a bed seat for one person, allowing you to lie back and luxuriate in the heat.
วันหยุดไม่แน่นอน
A meditation sauna that allows self löyly. After löyly, pressing the button activates a powerful tornado heat wave from the fan, quickly raising the perceived temperature. A popular space for sauna fans seeking intense heat.
A dry sauna with automatic löyly and a temperature setting gentle for women. The top tier is designed with a reclining shape, so you can slowly work up a sweat in a relaxed position. Experience a deep sense of refreshment in the comfortable heat.
A steam sauna filled with the vapor of natural hot spring water. By applying the provided salt to your body, you can remove old dead skin cells and enjoy a smooth-skin effect. With its mild temperature, you can enjoy detoxing while wrapped in moisture.
A cold plunge bath featuring a sharp, refreshing chill, made with binchotan charcoal and bakuhan stone. It is also deep, instantly cooling the body after sauna use and leading you into a refreshing cooldown.
A mild-temperature cold bath using underground water, installed in the open-air area. Ideal for those who find very cold baths too intense or for anyone who wants to enjoy a two-step cooling experience, this is a pleasant cooldown spot.
A cold plunge bath with binchotan charcoal for a gentle feel on the skin. It softly cools the body after sauna use and helps you feel refreshed. Its spacious design lets you soak comfortably at your leisure.
A meditation sauna that allows self löyly. After löyly, pressing the button activates a powerful tornado heat wave from the fan, quickly raising the perceived temperature. A popular space for sauna fans seeking intense heat.
A dry sauna with automatic löyly and a temperature setting gentle for women. The top tier is designed with a reclining shape, so you can slowly work up a sweat in a relaxed position. Experience a deep sense of refreshment in the comfortable heat.
A steam sauna filled with the vapor of natural hot spring water. By applying the provided salt to your body, you can remove old dead skin cells and enjoy a smooth-skin effect. With its mild temperature, you can enjoy detoxing while wrapped in moisture.
A cold plunge bath featuring a sharp, refreshing chill, made with binchotan charcoal and bakuhan stone. It is also deep, instantly cooling the body after sauna use and leading you into a refreshing cooldown.
A mild-temperature cold bath using underground water, installed in the open-air area. Ideal for those who find very cold baths too intense or for anyone who wants to enjoy a two-step cooling experience, this is a pleasant cooldown spot.
A cold plunge bath with binchotan charcoal for a gentle feel on the skin. It softly cools the body after sauna use and helps you feel refreshed. Its spacious design lets you soak comfortably at your leisure.