The park has countless stone monuments onto which poems and proses have been carved. This has to do with the origin of the park's name, "Man'yo," derived from the famous compilation of ancient Japanese poems, the "Man'yo-shu" (The Anthology of Myriad Leaves). Since this area is known for the occurrence of the "hagi" (Lespedeza) plant believed as having been inspiration for a number of those poems, the word "Man'yo" (albeit with different kanji characters) was chosen to baptize this place. The relation with these particular "hagi" is unknown, so we'll leave it to your imagination.

Usually in June's first weekend on Saturday & Sunday the park sees the Iris Flower Festival ("Hana-shobu Matsuri"), with shows, tea parties and cultural events. Miss Tanabata and Miss Drapery, the gorgeous ladies chosen to represent this friendly city, eventually grace the event too!