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Toyako Onsen Manseikaku Hotel

Toyako, Hokkaido, Japan
Toyako Onsen Manseikaku Hotel
Location
Toyako, Hokkaido, Japan
Water type
sodium chloride
Temperature
40 °C
pH
7.3

Water profile

Thermicity
Sedative
40 °C
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

Toyako Onsen Manseikaku Hotel overlooks the stunning caldera lake of Tōya in southern Hokkaido — a UNESCO Global Geopark and one of Japan's most geologically active volcanic landscapes — where chloride-rich volcanic hot springs emerge near the lakeshore in a setting of exceptional natural drama and scientific significance. The Manseikaku, one of the oldest and most distinguished ryokan on Lake Tōya's shore, channels the volcanic spring water into lakeside rotenburo and indoor baths with sweeping panoramic views across the circular caldera lake to the active Shōwa-Shinzan lava dome, which erupted spectacularly in 1944–45 and continues to steam visibly from its summit. The lake's shores bear the permanent marks of the dramatic 2000 eruption of Usu volcano — preserved as a geopark exhibit where lava flows buried roads and buildings now shown as geological monuments — reflecting the deep geological dynamism of this remarkable Hokkaido volcanic landscape. Combining geological wonder, caldera lake panoramas, exceptional Hokkaido kaiseki cuisine, and the intimacy of a distinguished lakeside ryokan tradition, Toyako Onsen Manseikaku offers one of southern Hokkaido's most complete and atmospheric onsen experiences.

Insider tip — Toyako Onsen lines the southern shore of Lake Toya, a nearly circular caldera lake formed by a massive volcanic eruption and still flanked by active Usu volcano. The sodium-chloride water at 40°C is drawn from geothermal sources beneath the lake basin, and large hotel rotenburo offer views directly across the water to Nakajima island. The nearby Nishiyama Crater Trail shows lava flows and earth upheavals from the 2000 eruption still frozen in time. Fireworks are launched over the lake every night from late April to October.
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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 water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).