Japan’s first! A 24-hour, year-round, fully equipped massive sentō
Osaka Toyonaka City
A massive sentō in Toyonaka City, known as Japan’s first public bath to operate 24 hours a day and remain open year-round. Inside the spacious bath area, it features a powerful far-infrared dry sauna with intense heat, as well as a steam sauna that regularly blasts out forceful bursts of steam. It also offers a well-chilled cold plunge bath, a high-concentration carbonated spring bath made with ancient Japanese cypress, a walking bath, and a wide variety of other baths, along with a generous outdoor-air bath area.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity15people
A authentic far-infrared sauna with the scent of hinoki cypress drifting through a spacious interior. You can watch TV while enjoying a thorough sweat session in the hot sauna room.
Sauna TypeSteam Sauna
Capacity8people
A powerful steam sauna that periodically blasts out intense steam, rapidly raising the perceived temperature. Enjoy a refreshing sweat as you are enveloped in steam.
Water QualityTap Water
Capacity6people
A clean, high-quality cold plunge bath with a maximum depth of 110 cm, allowing you to submerge all the way up to your shoulders. It tightens your overheated body after the sauna with a crisp, invigorating chill.
24 Hours
Closed Days: Open all year
〒561-0834 Osaka Prefecture, Toyonaka City, Shonai Sakaemachi 3-24-10
Gender Access
Gender Separated
Curated by an expert who visits onsen and sauna facilities every day and has explored 300+ locations — only facilities confirmed to be truly exceptional are featured.
Learn more
Japan’s first! A 24-hour, year-round, fully equipped massive sentō
Osaka Toyonaka City
A massive sentō in Toyonaka City, known as Japan’s first public bath to operate 24 hours a day and remain open year-round. Inside the spacious bath area, it features a powerful far-infrared dry sauna with intense heat, as well as a steam sauna that regularly blasts out forceful bursts of steam. It also offers a well-chilled cold plunge bath, a high-concentration carbonated spring bath made with ancient Japanese cypress, a walking bath, and a wide variety of other baths, along with a generous outdoor-air bath area.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity15people
A authentic far-infrared sauna with the scent of hinoki cypress drifting through a spacious interior. You can watch TV while enjoying a thorough sweat session in the hot sauna room.
Sauna TypeSteam Sauna
Capacity8people
A powerful steam sauna that periodically blasts out intense steam, rapidly raising the perceived temperature. Enjoy a refreshing sweat as you are enveloped in steam.
Water QualityTap Water
Capacity6people
A clean, high-quality cold plunge bath with a maximum depth of 110 cm, allowing you to submerge all the way up to your shoulders. It tightens your overheated body after the sauna with a crisp, invigorating chill.
24 Hours
Closed Days: Open all year
〒561-0834 Osaka Prefecture, Toyonaka City, Shonai Sakaemachi 3-24-10
Gender Access
Gender Separated
Curated by an expert who visits onsen and sauna facilities every day and has explored 300+ locations — only facilities confirmed to be truly exceptional are featured.
Learn more