| Native Name: | 豊後森機関庫 |
| Location: | 242-7 Iwamuro, Kusu, Kusu District, Ōita Prefecture, Japan 879-4405 |
| Operator: | Japanese National Railways |
| Opened: | 1934 |
| Closed: | 1971 |
was a railway roundhouse located to the east of Bungo-mori Station on the Kyūdai Main Line in Kusu, Ōita Prefecture, Japan.
The roundhouse and its turntable, which operated from 1934 to 1971, were designated as a National Tangible Cultural Asset in 2012 as the last roundhouse in Kyushu.[1]
Bungo-Mori Roundhouse was completed in 1934 and was able to hold 25 steam locomotives at its peak around the year 1948.[2]
During the Second World War, Bungo-Mori Roundhouse was used for military transport. It was strafed by carrier-based United States Military aircraft on August 4, 1945, killing three staff members.[3] Bullet holes can still be seen on the walls of the roundhouse.
In 1970, the Kyūdai Main Line stopped using steam locomotives and Bungo-Mori Roundhouse was closed the following year. The roundhouse, now with rusted steel frames and broken windows, is a historical landmark and a popular tourist destination.
In 2015, the JNR Class 9600 steam locomotive No. 29612, which was built in 1919, was moved from Shime, Fukuoka Prefecture to Bungo-Mori Roundhouse for preservation. It is now displayed in front of the roundhouse.
A museum for the Bungo-Mori Roundhouse was created by industrial designer Eiji Mitooka in a renovated staff room to the west of the former roundhouse.
In 2023, a door was erected in front of the roundhouse in a reference to the 2022 animated film Suzume.[4]