Yamada Ryokan

About Yamada Ryokan

Yamada Ryokan (山田旅館) is a hot-spring inn at Otari Onsen in Otari Village, Nagano Prefecture, where six buildings, from a main wing raised in the late Edo period to a bathhouse rebuilt in 1926, were registered as Registered Tangible Cultural Properties on October 12, 2001. The inn trades as Otari Onsen Oyumoto Yamada Ryokan.

The six registered buildings are the Main Building, the New Building, the Bathroom (the bathhouse), the Front Storehouse, the New Storehouse and the Yakushido, a small hall for the healing Buddha. The Main Building carries registration number 20-0092, and the other five run from 20-0094 to 20-0098. All six were entered in the 30th round of registrations, with official notice published on October 29, 2001. The owner is Yamada Ryokan Co., Ltd. Five buildings were registered for their contribution to the historic landscape; the Front Storehouse alone was registered as a model of form and craft.

The inn uses its own names for several of them. Staff call the New Building the Taisho-kan, the Bathroom the Moto-yu bath hall, and the New Storehouse simply the museum, so it helps to know both names when booking or asking questions at Yamada Ryokan.

A Spa Village Under Mount Amakazari

Otari Onsen lies on the southern flank of Mount Amakazari, close to the border with Niigata Prefecture. The Ministry of the Environment, in its 2020 plan for Otari Onsen as a National Health Resort Hot Spring, places the spa inside Myoko-Togakushi Renzan National Park, 11 kilometers east of Nakatsuchi Station on the JR Oito Line. The Agency for Cultural Affairs describes Yamada Ryokan as a long-established inn with Mount Amakazari at its back and the Nakatani River below it to the south.

According to the inn, the original spring, the Moto-yu, was found in 1555, around the time of the Kawanakajima campaigns, by a retainer of the warlord Takeda Shingen, who was guided by a vision of Kannon in a dream. The water came to be called Utsutsu no Yu, the bath of dream and waking. The inn also says the spring was exhibited in the Meiji era at an international spa exhibition in Germany. Both accounts come from Yamada Ryokan itself; no public record of the exhibition could be found.

Two springs owned by the inn, the Moto-yu and the Shin-yu, feed the baths without added water or heating. The water is a sodium bicarbonate spring. The Ministry of the Environment notes that the resort has avoided drilling and boring and still uses its springs in their natural state.

Several inns stood at Otari Onsen until the Showa era; today Yamada Ryokan is the only one, open all year. Old mountain paths reached the spa from the Nechi valley near Itoigawa over the Yu Pass, and from Myoko Kogen over the Otomi Pass. A bus route reached Otari Onsen in 1951, opening the way from Matsumoto and Itoigawa. Snow here can pile more than 4 meters deep, and the six timber buildings of Yamada Ryokan have stood through it.

How the Six Buildings Fit Together

Arriving from the road, the first building you meet at Yamada Ryokan is the New Storehouse, set on a stone retaining wall beside the entrance. The Main Building stands to its northwest. Across a narrow lane that runs from the Main Building toward the New Building, the Front Storehouse faces east.

The Bathroom is attached to the west gable of a row building, the nagaya, and the New Building is joined in turn to the west gable of the Bathroom, then bends northward in a shallow dogleg. The Agency for Cultural Affairs credits this continuous line of row building, bathhouse and guest wing with giving the inn the look of a small spa-town street. The nagaya itself is not among the six registered buildings; the inn lists a guest wing, the Meiji-to, converted from a Meiji-era nagaya.

Highest up the slope is the Yakushido, which faces south against the hillside, northeast of the New Building and north of the Bathroom.

In order of construction, the Yakushido dates from the late Edo period (between 1751 and 1829) and the Main Building from the final decades of the Edo period (between 1830 and 1867), with an extension added in 1884. The Front Storehouse followed in 1885, the New Storehouse in 1909, the New Building in 1914, and the rebuilt Bathroom in 1926. Ink inscriptions on the ridge beams date both storehouses. Yamada Ryokan was never designed as a single scheme; it grew building by building as the business of the spa required.

A festival for the Yakushido is held each year on the 7th and 8th of May and November, when the priest of Gencho-ji temple chants sutras for good health. Visitors who would like to attend are asked to contact Yamada Ryokan.

Visiting Yamada Ryokan: Access, Bathing and Opening Hours

Yamada Ryokan is a working inn, and the interiors of its six buildings are open only to overnight guests and day bathers. The official website offers no tours for sightseers alone. Rooms in the Main Building and the New Building are still let to guests, and reservations are taken by telephone up to three months ahead. Check-in runs from 3:00 p.m. to 5:00 p.m., and the inn accepts cash only.

Day bathers are received from 10:00 a.m. to 2:30 p.m. The Moto-yu bath hall, registered as the Bathroom, is open all year from 11:00 a.m. to 3:00 p.m., and the outdoor view bath is open from 10:00 a.m. to 3:00 p.m. between mid-April and early November. Each costs 700 yen for adults and 400 yen for children. The outdoor bath closes in winter. A day-stay option with a private resting room and unlimited bathing costs 3,000 yen and must be booked. Prices and hours can change, so check with the inn before you go (confirmed October 9, 2026).

The website gives no rules on photography. Ask the staff first, and never point a camera into a bath that other guests are using.

By public transport, take the Otari Village bus on the Otari Line from Minami-Otari Station on the JR Oito Line, heading for Amakazari Kogen, and get off at Otari Onsen Yamada Ryokan-mae. The timetable valid from April 1 to November 30, 2026 has five buses a day; the ride takes about 36 minutes and the fare is 800 yen. From December through March the bus terminates at Onagishita, about 2 kilometers short of the inn, and Yamada Ryokan collects guests from there if you call ahead.

By car, allow about 90 minutes from the Azumino interchange on the Nagano Expressway via National Routes 147 and 148, or about 50 minutes from the Itoigawa interchange on the Hokuriku Expressway via Route 148. The forest road from the Myoko Kogen side is often closed by snow or landslides, and car navigation can be wrong, so Yamada Ryokan asks drivers to check the route just before they set out (telephone 0261-85-1221).