Art works (?) on Beppu streets 別府のマンホールの蓋には季節の花が！

As I walk along Beppu streets, I've noticed most of manhole lids have flowers.
I thought this is interesting. So, I've taken pictures of some of them.






Manhole lid---azalea



Manhole lid---December flowers "camellia and ornamental cabbage"

 

Manhole lid---azalea omurasaki

Manhole lid---July flowers "rose of Sharon and Salvia"

Manhole lid---November flowers "sasanqua camellia and chrysanthemum"



Manhole lid---January flowers "Japanese allspice and common marigold"



Fire hydrant---azalea