Back outside, the effect of the retractable facade on the street is undeniable. Peterson was able to make it happen by applying a thin veneer of brownstone to a lightweight honeycomb backing, just like the top layer of the ground floor, as mentioned earlier in this story. Traditional brownstone would have made the wall too heavy to raise and bring inside the space. With the variety of different claddings — brownstone, brownstone veneer, porcelain — the facade takes on a striated appearance, yet without giving away the delights that happen at the push of a button.More:Book to Know: Contemporary New York Architecture