Nakano History Museum

Nakano History Museum, or Nakano-ku-ritsu Rekishi Minzoku Shiryokan (中野区立歴史民俗資料館), which is a 10-min walk from Seibu Shinjuku Line Numabukuro Station, is a small municipal museum focusing on the history and folk custom of Nakano-ku (Nakano City.)
Taking photos of exhibits is allowed, though there's little English explanation about them.
Like Shitamachi Museum in Taito-ku and Fukagawa Edo Museum in Koto-ku, it is one of many city-run museums which display the custom and histories of each municipality, but only a handful of them permit taking photo freely.
In spring and fall, an old house adjoining the museum building is also to be open to the public.

Inside the museum building

Kyu-Yamazaki house

Kyu-Yamazaki house, adjacent to the museum building, will be open to the public in spring and fall. This house was built in 1841 as a cottage apart from the main house building of the Yamazaki family, and later it had been used as a study and tea house until it was donated to the city.