This unique alleyway, right news to Sts. Anthony and Alphonsus Church in Greenpoint, reminds me of the sheltered passageways you're find between buildings in the heart of old London, the kind that open up of the other side to hidden courtyards full of homes and businesses.
This one leads only to a parking lot and the next street over. But it's very popular with locals, since it provides a welcome shortcut through what is otherwise a rather long block of Manhattan Avenue. The riot of odd-job windows and doors to be found along the passageway add to the general Dickensian character.