Miraku Onsen; Spa-Herbs
Minuma, Saitama, Saitama, Japan
- Location
- Minuma, Saitama, Saitama, Japan
- Water type
- sodium chloride, thermal
- Temperature
- 40 °C
- pH
- 7.3
Water profile
Thermicity
Sedative
LowHigh
Relaxing — deep, immediate muscle release.
Mineralisation
Restorative
LowHigh
Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Miraku Onsen, also known as Spa-Herbs, is located in Minuma, Saitama city. Its sodium-chloride water emerges at around 40°C. The facility has an indoor bath, an outdoor rotenburo bath and a sauna.
Insider tip — Miraku Onsen Spa-Herbs combines traditional Kanto artesian spring bathing with herbal wellness treatments in northern Saitama city, adjacent to the Omiya district — home to the Omiya Bonsai Village, the world's premier bonsai cultivation center where master growers tend centuries-old trees. The dark artesian water here is the classic Kanto-black type, drawn from deep Miocene sediments beneath the flat Kanto plain. The herb garden concept softens the urban surroundings with fragrant aromatic plants.
Nearby
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 40 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features sodium chloride & thermal water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.