A nice specimen of architectural symmetry, and one with an interesting history, too, which is wonderfully documented at this site here. The author notes that the Grosvenor Private Boarding Stable dates back to the Civil War and before; as he explains,
The handsome three-story brick stable most likely sheltered the carriages and horses of a wealthy Washington Square homeowner. On the upper floors of the 26-foot wide structure one or two employees – grooms or drivers, for instances – would have lived.
As you’ll see if you read the history, ever since the turn of the twentieth century, it’s been solely a residence for humans!
I like the way the light around the lamp to the right (and barely visible emanating from the lamp on the left behind the tree) has a slight Magritte effect, I think, in the sense explained in this post here .