A close is a narrow alley leading into a square or garden, sometimes as narrow as this staircase.
I don't know what we would have found at the end of Craig's Close, but taking a look into Dunbar Close we found the Dunbar's Close Gardens. Formal gardens laid out in a clear geometry.
I've added one more picture of the Dunbar Gardens so that you can better see the benches along the edges. I was so awed by the green (and the geometry) that I didn't think of benches specifically, but I will have some benches for Paulie and Rune later in the trip.