The large pentagonal tiles that pave the way to the entrance of the Tekniska Museet in Stockholm may appear to be randomly placed. But they are not; they follow a definite but unusual pattern. Also unusual is the history of how the tiling came to be, and who discovered it. Marjorie Rice, who was not a professional mathematician, discovered this tiling while pursuing for years her self-assigned task of finding all types of convex pentagons that can tile the plane.