No, this has nothing to do with the Frank Lloyd Wright house in southwestern Pennsylvania. This is a small waterfall at Valley Falls State Park, east of Fairmont.
As usual, it was a clear, sunny day that turned cloudy as soon as I arrived with my camera and tripod. I was experimenting with bracketing exposures and cranking back the density of my variable neutral density filter. Apparently (make note of this!), the best results seem to be with the smallest aperture. This shot was at f/18, and it took a full eight seconds.
A lot of the photos where I used the neutral density filter have noticeable "noise." This one doesn't have much at all. There wasn't too much exposure correction needed in the Lightroom version, either.