It is indeed a tranquil location. We saw the sign on our way home a few years ago and stopped in. I took a shot from about the same spot and have it framed on our wall. It is not Mabry Mill, however, but is Mingus Mill. Mabry Mill is in Virginia.
Here is my shot of the mill and another shot from the same trip that I had printed and framed.
I have taken shots of Mabry Mill as well but couldn't find one. I hope to get back there soon as well.
On the same theme, here is a panorama made from 4 shots that I took this past weekend in the Smokey Mtns. from the parking lot of Waterrock Knob trail near Maggie Valley, NC.