Unless you're admiring the stained glass of a historic church, windows are something that we mostly take for granted. You can open them, close them, and draw the blinds - pretty simple, right? Well, in Germany, the windows provide a little more to write home about. This man demonstrates how European windows can open in two distinct ways, all at the turn of a knob. While the mechanisms at work here are pretty complex, the windows couldn't be any simpler to use.