A Children's Library That Became a Toy Museum
On the wooded grounds of the Nishio City Library in Aichi Prefecture sits a small clapboard building whose window sills are set lower than you would expect. That was deliberate. When the structure went up around 1925, it was built for children, and the architect placed the windows where a child's eyes would naturally fall. The building now holds the library's Toy Museum, known in Japanese as the Omocha-kan, but it began as the children's hall of the Iwase Bunko, among the earliest purpose-built spaces for children in Japan outside the school system.
The single-story wooden building covers just 57 square meters under a tiled roof. Its walls wear American-style weatherboarding, the gable carries half-timber detailing in the manner of an English cottage, and tall double-hung sash windows run along the sides. For a structure of the Taisho era (1912 to 1926), when Western and Japanese building habits were still settling into each other, it is a confident little exercise in domestic Western style.
Why It Is a Registered Cultural Property
In June 1999 the building was entered on the national register of Tangible Cultural Properties, together with the brick archive that stands a short walk away on the same grounds. This is a registration rather than a designation, the lighter of the two forms of national protection. Registration recognizes a structure as worth preserving and recording; the stricter route, designation as an Important Cultural Property or National Treasure, carries tighter legal controls. The children's hall qualified under the criterion for a building that serves as a model of its kind.
Part of its value is the rarity of its purpose. The merchant and philanthropist Iwase Yasuke had opened the Iwase Bunko as a private lending library in 1908, giving the people of Nishio free access to books. The children's hall, added around 1925, carried that idea down to the youngest readers at a time when dedicated children's spaces were almost unheard of in Japan. It is sometimes called the country's first children's hall, though the claim is difficult to verify and is best treated with some caution.
The design also carries a local signature. The architect Nishihara Kichijiro, a former engineer in the Aichi prefectural works office who ran a practice in Nagoya, designed the neighboring brick archive as well. Inside the children's hall, the lower walls are set with roof tiles bearing the family crests of the successive lords of Nishio Castle, a quiet link to the town's feudal past worked into a building meant for its future citizens.
What to Look For
One thing to know before you go: the Toy Museum is closed for now while the city carries out seismic strengthening, so the interior and its displays cannot be visited at present. The building can still be seen from the surrounding grounds, and the exterior is where most of its character lives.
Walk around it and the children's logic of the place becomes clear. The window sills sit low, the proportions stay modest, and the half-timbered gable gives the little structure the air of a storybook cottage rather than a civic institution. The weatherboarded walls were repainted in 2003, keeping the pale Western finish that set the building apart from the timber-and-plaster norm of its day.
When the building is open, the draw inside is its folk-toy collection. It grew from a 1985 gift of 860 traditional toys gathered from across Japan by a local shopkeeper named Torii Ishiro. Around 350 of them are shown in wall cases and rotated from time to time, so repeat visitors find different pieces on display. The toys reach across regional traditions of clay figures, papier-mache animals, spinning tops and the like, the kind of playthings children knew before factory-made toys took over.
Nearby
While the Toy Museum waits to reopen, its neighbor on the same grounds is open and free. The Iwase Bunko, reborn in 2003 as Japan's first museum devoted to antiquarian books, holds some 80,000 volumes, among them works designated Important Cultural Properties. In the upstairs reading room, visitors can request and handle genuine old books rather than view them behind glass. There is no admission charge, in keeping with the founder's wish.
The brick archive beside it, the third of these historic structures and likewise a Registered Cultural Property, is normally closed, but its interior is sometimes opened on volunteer-guided tours, especially around the Nishio Book Festival in late October. The grounds adjoin Kakujo Park, laid out on the site of Nishio Castle, which makes for an easy walking loop.
- 📍 Plan Your Visit to Aichi
- Find tours, activities & transport passes near Nishio City Library Toy Museum (formerly Iwase Bunko
- [ Nagoya Castle & Atsuta Shrine History Tours ]
Q&A
- Can I go inside the Toy Museum?
- Not at present. The building is closed while the city carries out seismic retrofitting, and no reopening date has been announced. You can still see the exterior from the grounds.
- Is there an admission fee?
- No. The Toy Museum belongs to the public library and is free, and the neighboring Iwase Bunko book museum is free as well.
- How do I get there?
- From Meitetsu Nishio Station it is about a 20-minute walk, or roughly 10 minutes from Nishio-guchi Station. The community Kururin Bus also stops near the library and Iwase Bunko.
- Is this a National Treasure?
- No. It is a Registered Tangible Cultural Property, the lighter tier of national protection, recognized for its design and its early role as a facility built for children.
- What is worth seeing if the building is closed?
- Visit the adjacent Iwase Bunko book museum, view the brick archive and the children's hall from outside, and walk over to Kakujo Park on the former castle grounds.
Basic Information
| Name | Nishio City Library Toy Museum (former Iwase Bunko Children's Hall) |
|---|---|
| Location | 474 Kamezawa-cho, Nishio City, Aichi Prefecture |
| Designation | National Registered Tangible Cultural Property (Building) |
| Registered | 7 June 1999 (registration no. 23-0023) |
| Quantity | 1 building |
| Built | Around 1925 (Taisho 14) |
| Structure | Single-story wood, tiled roof, building area approx. 57 sq m |
| Architect | Nishihara Kichijiro |
| Owner | City of Nishio |
| Public access | Currently closed for seismic retrofitting; exterior viewable from the grounds |
References
- National Database of Designated Cultural Properties (Agency for Cultural Affairs)
- https://kunishitei.bunka.go.jp/bsys/maindetails/101/00001114
- Cultural Heritage Online (National Institute of Informatics)
- https://bunka.nii.ac.jp/heritages/detail/113994
- City of Nishio Official Website: Toy Museum (former Iwase Bunko Children's Hall)
- https://www.city.nishio.aichi.jp/sportskanko/bunkazai/1001485/1001611/1005601/1002933.html
- Nishio City Library: Toy Museum
- https://www.library.city.nishio.aichi.jp/contents/facility-top/facility/toy
- Iwase Bunko, Museum of Antiquarian Books
- https://iwasebunko.jp/
Last verified: 2026.06.17