There's an interesting looking Japanese website encouraging industrial tourism. https://www.jetro.go.jp/en/eccj/ind_tourism/foods.html https://www.jetro.go.jp/

There's an interesting looking Japanese website encouraging industrial tourism. https://www.jetro.go.jp/en/eccj/ind_tourism/foods.html https://www.jetro.go.jp/en/eccj/ind_tourism/foods.html is the link for food, but there's a lot more categories such as life sciences and heavy industry. (I found that link from HN a little while ago, https://news.ycombinator.com/item?id=33680460 https://news.ycombinator.com/item?id=33680460 is the HN submission, which might have other interesting info on it)