Find the rule!

Imagine you work for the Post Office Services. How do you know where to leave the envelope? Yes, you are right. Number 3, even number 1, are clear.. But, What about the rest of them?


By the way, these boxes belong to the float houses in Granville Island, which was an industrial park that was transformed into a Public Market. This is the awesome view from the harbor -the view is behind the Swiss girl, salidos!!!-