Replying to this comment once more in case anyone else is interested. I believe the museum in reference is Takayama Showa-kan in Gifu prefecture[1]. Originally

Replying to this comment once more in case anyone else is interested. I believe the museum in reference is Takayama Showa-kan in Gifu prefecture[1]. Originally I found a Showa Museum in Tokyo[2] but the aesthetics of the one in Gifu were much closer to what we had in mind in the context of the Shin-Yokohama Ramen Museum's "alleyways" and the arcade at Super Potato. [1]: https://www.hida.jp/english/touristattractions/takayamacity/historyandculture/4000159.html https://www.hida.jp/english/touristattractions/takayamacity/... [2]: https://www.japan.travel/en/spot/1720/ https://www.japan.travel/en/spot/1720/