Himeji City is famously known for it’s magnificent castle.
It is a city located in Hyogo Prefecture and can easily be accessed by either JR or Hanshin Train line from Osaka.
At first I thought the design was a bird but it is actually the city’s flower called Sagiso (Radiata Flower).
This other one is the flower and the bird (White Egret).
According to this page, there is another design which has the castle on it. I guess I have to go and look for it one more time.
If you are ever in Himeji area, try to look this manhole cover.