The Mandelbrot set illustrates self-similarity. As you zoom in on the image at finer and finer scales, the same pattern re-appears so that it is virtually impossible to know at which level you are looking.
TV Antenna and Fractals - DIY - How to build a fractal tv antenna. Pictures and instructions to build a fractal antenna using just hangers, wood and a 75 to 300 Ohm matching transformer. Get an HD tv signal over the air.