I've seen this a 100 times before and it kinda sorta occurred to me it was meant for something special. I thought it was a fountain and they forgot to add water. It seemed to always have litter inside. Then recently I walked by on a rainy day and happened to look up and see the rain draining from a slot on the roof overhanging it. Then it clicked, duh, it is a fountain, of sorts, of kinds. So cool! It's not really a fountain just a haiku of a fountain!