Some of Japan’s best autumn foliage destinations are just a train ride away. It’s almost time to put on your koyo (autumn foliage) caps and embrace another change in season. But where to go? Kyoto and Hokkaido offer splendid autumn sights, but if you can’t travel that far, there are several unique spots right here in Tokyo. This list guides you to some rather well-known, highly frequented, classic spots—but also to some semi-secret, uncharted locales that you may not have enjoyed the colorful season at before. 1. Rikugien GardensLocated a short walk (or skip if you’re excited) from Komagome St…