Copenhill Boston
View attachment 21143
Not really visible from the street, but the stainless steel fins have a random dimple pattern on the top surface of them.
The intent from the Architect (Payette) was that the more horizontally deep fins would have a denser pattern in order to break up ice/snow, and as the shape shifts to a more to a vertical and shallow fin there would be less dimples.
But I doubt that it really affects anything.
View attachment 21141
Some taller panels on the North side being installed:
View attachment 21142