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Shiriyaki Onsen

Iriyama, Nakanojo, Agatsuma District, Gunma 377-1701, Japan 尻焼温泉


A wild, gigantic outdoor onsen-pool made from a dam in the river where guests can enter wearing their swimsuits!

Known as Kanto’s largest cloudless bath, guests here can enjoy themselves and play in the river with friends and families. It is especially crowded in the summer with families.

Wearing swimsuits in the pool is OK, however there are no changing areas so it is recommended to come already wearing your swimsuit.

It is as natural asthe surrounding nature, so it is free and open 24 hours. During rain or snow, it may be difficult or impossible to enter so please check the weather beforehand.

Also, in recent years, it has been said that bad manners have increased due to increasing amounts of visitors. Please be careful of your manners with others and consider your surroundings.

Please do not throw away trash or litter in the area, as it is a place blessed by nature and has been used by generations of Japanese.

A common dressing space is available
Free parking is available nearby
[Bathing Fees]
Iriyama, Nakanojo-machi, Agatsuma-gun, Gunma
24 Hours
None (check the weather prior to arriving)
0279-26-7727 (Nakanojo-city tourism division)
Shiriyaki Onsen尻焼温泉/
  • Address: Iriyama, Nakanojo-machi, Agatsuma-gun
  • City: Gunma
  • State/county: Kanto
  • Zip/Postal Code: 377-1701
  • Country: Japan


Updated on April 18, 2019 at 1:33 am

  • Property Type: Onsen
  • Property Status: All tattoos accepted

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