Japanese manhole covers! Only when moving to Japan did I find out that they were quite a thing. Different districts boasting their own designs, many of them in bright colours. However, mostly rushing around during the day, I never spent much time looking down to spot them. It took me a hiking trip to rural Japan last year to find the peace I needed to actually admire them. I especially like the simplicity of the top one which is beautiful even without any colour.
katazukete 