At the Posted coordinates, look for a small wall mural (or poster, or perhaps we should just call it "art") facing the street, approximately 3x2 meters. It is in a blue frame surrounded by green. (UPDATE: A DIFFERENT IMAGE IS NOW ON DISPLAY. As of July 2018, look in the window display on the right. There are multiple images. Look at the center one.) The art is based on an actual location, not in Arnprior.
Using your local knowledge, google (the title of the art can be a hint), or even starting a conversation with a local, determine where this scene is located and then go there. Once there, adjust the decimal minutes on your GPS to .664 and .470.
As tempting as it may be, please do not post any photos of the final location as this will ruin the point of the first stage. Photos with a very bland/generic background are acceptable. Also, please do not post any photos of the art, of course.