These are one of the numerous co-op (somewhat like condo) buildings I mentioned about yesterday. Majority of them were built around 1920's and fashioned to resemble the English garden apartments in London. Behind these buildings are elaborate private community gardens that are accessible to the residents only.
So do you have a garden in your building/house?
N.B.: I posted this yesterday but realized it was theme photo day so I had to "withdraw" this post and put up a new one to reflect the selected theme: water.