Interesting concept, but I do believe the "memorial" will be better seen in its peoples action rather than in some literal monument... If such a thing is even possible... Your poem is so very optimistic, but really neglects to speak on the fact that the entire world has been at war with each other since the very inception of the world... So what you're asking for is rather a miracle than a memorial
Nice write anyway, as I fondly believe that it is in the gesture of peace which brings about action and that positive action which will bring about that change that can make a miracle reality
Jacquii.