At one corner of the parking lot near 岩井ゆかむり温泉, the spring emerges at 47.6°C. The water in the bath reaches a pleasant temperature; the communal bath is supplied entirely with spring water. Thus, the figures for the spring and the bath describe different temperature conditions. Iwai Onsen has a 1,300-year history and is one of the oldest hot spring resorts in the San'in region. This brings together a close look at the spring itself and the long history of the hot spring resort.

Communal Bath and Traditional Bathing Customs

The communal bath ゆかむり温泉 is popular with local residents. Around Iwai, “the bath” usually means this communal bath. The traditional custom of 湯かむり is also well known at Iwai Onsen: a towel is placed on the head, and hot water is scooped up with a ladle and poured over the head. This custom describes a distinctive way of bathing and is regarded here as a traditional practice.

Another bath with its own history is 長寿の湯 at the inn 岩井屋. There, the hot spring water emerges directly beneath the laid pine boards. The bath was included in the selection of Japan’s 100 famous hot springs. This selection refers to 長寿の湯, not to the inn as accommodation. Together, the communal bath and the bath at the inn show two distinct, specifically named aspects of Iwai’s hot spring culture.

Inn Heritage and Architecture

The three-story Japanese wooden inn 明石家 has been in existence for 300 years. The writer Shimazaki Tōson stayed there. The building is therefore associated both with a long history as an inn and with the writer’s stay. As a cultural topic, it sits alongside the baths: here the focus is on an inn’s history, while the baths are about communal bathing culture and hot spring water.

Another historical trace leads to the former school building 旧岩井小学校校舎. Built in 1892, it is considered the oldest building in the pseudo-Western style in Tottori Prefecture. Its distinctive architectural features include a second-floor balcony, an entrance portico, and decorative roof eaves. The building also served as a filming location for the movie “第七官界彷徨─尾崎翠を探して”. The schoolhouse has two different cultural associations—its architectural history and its connection to the film—while its former function as a school remains central.

Religious and Regional Context

Near Iwai Onsen, 御湯神社 is revered as the guardian shrine of Iwai Onsen. The deities enshrined there include 御井神, the son of Ōkuninushi and Yagami-hime, as well as Ōnamuchi—another name for Ōkuninushi—and Yagami-hime. The shrine adds a religious dimension to the surrounding area alongside the themes of hot springs, inns, and school architecture.

In the broader regional context, the Uradome Coast area of the San'in Kaigan Geopark includes Iwai Onsen as well as the coastal stretch. This places Iwai Onsen within the wider geopark, while the baths and historic buildings remain the specific themes of the town.

Plan Your Stay

If you are looking for a hotel in Iwami, you can start by considering which aspect of the destination you would like to shape your stay: hot spring history, inn heritage, or architecture. These priorities raise different questions for planning your trip—for example, whether you want to focus mainly on the baths, the historic buildings, or both. Then search using your travel dates and compare the available booking options.

Discover more destinations: Tottori, Kurayoshi, Sakaiminato, Yonago.

Go to the main travel overview: Tottori Prefecture.