Edo-Tokyo Open Air Architectural Museum (江戸東京たてもの園) 江戸東京たてもの園
Real buildings from different centuries, inside a park, and you get in for four hundred yen.
An open-air museum in Koganei: a park where historic Tokyo buildings saved from demolition have been reassembled.
Tokyo
Musashi-Koganei
Jujutsu Kaisen
It is the Zen'in family residence in the Culling Game arc. The veranda where Naoya walks with Maki and Mai's mothers is that of the Nishikawa villa, a Western-style house from the Taishō period moved here from Akishima; the Kodakara-yu public bath, a hundred and fifty metres into the park, is the building in the next scene.
All the places from Jujutsu Kaisen
https://theanimetrip.com/luoghi/museo-architettonico-allaperto-edo-tokyo