Jury's Hotel, Bristol

This follows on from yesterday's shot, being the main hotel building adjoining the car-park next door.  I have no idea why this turned out so grainy, the original was like that, but it adds something to the image. 

And can anyone tell me what the little pieces of metal are sticking out above the windows?  I didn't notice them at the time, only when I got home and downloaded the images.  They are all above the top-left corners of each window frame, so must have a use???