Definitely when I went to Japan in 2003.
My sister was living there and at the time she was teaching English. She invited my mom and me to come see her in Japan, so we got to check out her neighborhood, go shopping, enjoy real Japanese food and karaoke, try out an onsen (the hot springs), take sticker pictures, go to her school and get interviewed by her students, visit a few different shrines, and of course . . . ride the train a lot.