19206 ／ おおつきし
Yamanashi PrefectureStacked beams reach out from both banks.
Saruhashi, hane-ki bridge01 ／ Tunnel
A road tunnel cut to carry the old Koshu Kaido over Sasago Pass. The prefecture notes twin pilaster ornaments on each side of the portal and bracket-like decoration above. It served as the main route until the new tunnel opened in 1958 (Showa 33). The city says it was completed in 1938 (Showa 13) and is 240 m long.
02 ／ Puppet theatre
The Oiwake puppet theatre is a prefecturally designated Intangible Folk Cultural Property. Worked by three people, it was kept up in the Edo period by the village's young men, in management, upkeep and performance alike. The prefecture records that it nearly died out after the Meiji Restoration, and that Mr. Amano of Oiwake, regretting this, kept the tradition alive. Some puppet heads are the work of master makers of Awaji and Awa.
03 ／ Castle ruins
Iwadono Castle Ruins is a prefecturally designated Historic Site, and the prefecture says its lord and date of construction are unknown. A cultural properties officer at the prefectural archaeological centre writes that the rock is conglomerate, that many enclosures follow one another southwest of the main enclosure at the summit, and that the Agekido gate site lies between huge boulders.
Living here
Six stations on the Chuo Main Line lie in the city: Otsuki, Sasago, Hatsukari, Saruhashi, Torisawa and Yanagawa. The city names Otsuki as the one where limited expresses stop. From Shinjuku to Otsuki, the daily Kaiji limited express takes 58 minutes (JR East timetable, October 2026). Otsuki is also the interchange for the Fujikyuko Line.
−11.4% since 2015
35,199 → 22,512
37.48km² of it habitable
2024
2.4 people per household
2020
National average 60,630 yen
2023
9.3 per 10,000 people
2023
These 3 items are waiting on a nationwide data source. We do not fill them with estimates.
ACCESS
Travel times follow JR東日本の駅時刻表（2026年10月ダイヤ。timetables.jreast.co.jp の大月駅〈中央本線〉上り・下りの平日・土曜休日と、各特急の停車駅ページ）で、乗り換えなしの特急の「発」と「着」を数えた値。市公式の移住ページ（2026-06 更新）も「大月駅から新宿駅までは特急電車で1時間」 (checked 2026-10-08). They vary by time of day.
Shape
North to south
19.2km
If something caught your eye, ask the town itself.
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