On a personal note: It is not often that I remember my dreams. When I do, they almost always take place in Tokyo, although the stories are mostly unrelated to Japan. Anyone who lived in Edo has spent huge chunks of time on trains and in train stations. My office was at the bottom of Gonosuke-saka right next to the Meguro river (such as it was), and I used Meguro station, both for the Yamanote-sen as well as for the Mekama-sen, sometimes several times a day. Inevitably, Meguro-eki will come up as a dream location, and when I wake up, I can still hear the announcements… all aboard!