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Foot Bath

Kawayu Onsen (쓒) is a small hot spring town inside Akan National Park's eastern section. It is located near Iozan (Sulfur Mountain), between Lake Mashu and Lake Kussharo. Kawayu's close proximity to the famous lakes makes it a popular base for visitors to the national park.

Kawayu's onsen water is especially acidic with a pH of 1.4. Visitors to Kawayu, who do not overnight at a ryokan with hot spring baths, can bathe at the some of the ryokan that open their bathing facilities to non-staying guests during the day for typically 500 to 1500 yen. There is also a free public foot bath near the Eco Museum Center.

Eco Museum Center
Kawayu Sumo Museum

Kawayu's Eco Museum Center offers general information on Akan National Park and Kawayu Onsen. Nearby, a pleasant walking path takes visitors though a mossy forested area. This path continues onto Iozan (Sulfur Mountain), 2.5 kilometers away.

Besides convenient location and hot spring waters, Kawayu offers a Sumo Museum, which is dedicated to the town's favourite son and biggest star, Taiho Koki. Taiho was a sumo wrestler who achieved the sport's highest title in 1961 at only 21 years of age. He has long held the record for most tournament victories.

Walking paths
Acidic hot spring water


Kawayu Onsen is a station on the JR Senmo Line, but it is located more than three kilometers outside of the town center. A bus operates between the station and the town center (10 minutes 290 yen one way) and is timed with train departures and arrivals. It is also possible to walk from the station to town via Iozan in about one hour.

How to get to and around Akan National Park

Hours & Fees

Kawayu Sumo Museum


9:00 to 17:00 (5:30 to 21:00 from June to mid October)


No closing days


420 yen

Kawayu Eco Museum Center


8:00 to 17:00 (April to October)
9:00 to 16:00 (November to March)


Wednesdays between November and April, December 29 to January 3



Tours and Travel Services

Page last updated: June 13, 2017