Now a scenic park, Joyama was once the site of a great 14th-century fortress, giving the area its name, which means ‘Castle Mountain.’ The small river still flowing past this park today carries a deep history, as it marks the true origin of Yaho Village.
| 名称 | 城山公園 |
| 所在地 | 〒186-0012 東京都国立市泉５丁目２１−２０ |