Osaka has a central circle line, Osaka Loop Line. https://en.wikipedia.org/wiki/Osaka_Loop_Line https://en.wikipedia.org/wiki/Osaka_Loop_Line The main stations

Osaka has a central circle line, Osaka Loop Line. https://en.wikipedia.org/wiki/Osaka_Loop_Line https://en.wikipedia.org/wiki/Osaka_Loop_Line The main stations along this line are probably Kyobashi and Tennoji, the latter of which has at least the tallest building in Japan. I would mainly divide Osaka in two centers, with Umeda being the CBD and Namba/Shinsaibashi area to be the center for people going out.