Kanagawa Yokosuka City
A seaside spa where you can enjoy breathtaking views of Tokyo Bay and natural hot spring water flowing directly from the source
"Yokosuka Onsen Yuranosato" is a day-use hot spring facility in Yokosuka City, Kanagawa Prefecture. Its biggest appeal is the open location right in front of Tokyo Bay, and the natural hot spring water flowing directly from the source offers exceptional heat retention, earning it the nickname "Netsu no Yu," or "Hot Water." The high-temperature sauna, which promotes deep sweating with far-infrared heat, and the salt sauna, which leaves the skin feeling smooth, are complemented by a cold plunge bath after sauna use and outdoor air bathing in the sea breeze, creating an exquisite sense of relaxation. The facility also features a variety of bedrock baths and a private terrace with an ocean view, allowing guests to refresh both body and mind while feeling the sea all day long.

A large bath in an excellent location overlooking Tokyo Bay, where you can enjoy chlorinated sodium strong brine spring water that rises from deep underground. The water is so rich in minerals that it tastes salty, retains heat very well, and is highly effective at keeping you warm after bathing. In the open-air area, there are baths where you can enjoy water flowing directly from the source and baths that offer a view as if you are one with the sea. The indoor baths also include a high-concentration carbonated spring that promotes blood circulation, allowing you to enjoy spectacular views and a diverse bathing experience all at once.

A high-temperature sauna that warms you thoroughly from the core with the power of far-infrared heat and encourages pleasant sweating. The dry heat fills the room, allowing you to quietly focus on yourself in a calm environment. In the spacious area, you can wash away the fatigue and waste of everyday life with your sweat and enjoy a refreshing sense of clarity. The flow from the sauna to the cold plunge bath is also smooth, making it an ideal setting for a well-balanced hot-and-cold contrast bathing experience.

A salt sauna where you can warm up while gently caring for your skin using the installed massage salt. By slowly sweating while rubbing the salt into your body, old dead skin cells and waste products are removed, and after bathing you can feel surprisingly smooth, soft skin. With a milder quality of heat than the high-temperature sauna, it is the perfect soothing space for times when you want to relax slowly while minimizing strain on the body.

A cold plunge bath placed right next to the sauna to quickly cool down your overheated body. If you start by cooling your hands and feet and then immerse your whole body, a crisp and refreshing chill wraps around you. After thoroughly calming your body heat, outdoor air bathing in the open-air area awaits, where the sea breeze blows through. While listening to the sound of the waves in the distance, you can sink into a deep sense of relaxation as if blending into the sea and sky.

A vast bedrock bath area offering a wide range of experiences, including rooms where nano-mist spreads like a sea of clouds, a forceful löyly experience with gusting heat waves, and spaces soothed by the power of rock salt. Guests can use it together regardless of gender in special attire, and the gently spreading far-infrared heat allows for effortless sweating. It is also fully equipped with a cool-down cave, a private terrace overlooking the sea, and a reclining room with unlimited manga reading, so you can enjoy detoxing to your heart's content and forget the passage of time.
Last admission 23:00
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JAPAN'S FINEST ONSEN & SAUNA
The Finest Onsen & Sauna in Japan
64 SELECTIONS
Most of what we surveyed never even made it onto this site. This book is a further cut from what did. Our editor bathed in every onsen and sauna in it, and wrote only what they confirmed on the ground.