The park houses rare examples of the KiHa 28 series, which were officially retired from regular commercial service by Isumi Railway in 2022.
Several train cars are available for overnight 'glamping' stays, allowing guests to sleep inside retired carriages.
The park uses a terrain-based layout that mimics a railway depot, with tracks preserved in their original context.
The collection includes retired electric train cars from the Choshi Electric Railway, known for its historic status in coastal Chiba.
The facility serves as a secondary life for trains that would otherwise have been scrapped.
Isumi Poppo no Oka is an open-air railway park situated in the hills of Chiba Prefecture, focusing on the preservation of retired Japanese rolling stock. The site features a collection of former Isumi Railway and Choshi Electric Railway vehicles, including the iconic red-and-cream KiHa 28 diesel car. Visitors can walk through several train carriages, some of which have been converted into stationary accommodation or dining spaces. The park is built on terraced terrain, requiring guests to walk along inclined paths to view the various train exhibits. It functions as both a preservation project and a recreational site for train enthusiasts and families. The facility also hosts local product stalls and agricultural displays reflective of the Isumi region.
The main train display area where multiple carriages are lined up together provides the best wide-angle composition.
Wear comfortable, sturdy walking shoes as the site is hilly and involves navigating gravel paths.
Check the weather beforehand, as most exhibits are outdoors and exposed to the elements.
Bring insect repellent during the summer months due to the park's rural, wooded location.
Do not expect a high-tech theme park experience; this is a quiet, preservation-focused site with rustic facilities.
Generally closed on Tuesdays and Wednesdays; confirm availability before visiting as operating days can shift seasonally.
Refrain from touching delicate train equipment or climbing on unauthorized exterior parts of the trains.
