Maybe Iran can help fund it. It would be educational for them. That way, they can see it was a real place, a real event, real history, and affected real people. Barry can meet with them without precondition and maybe it will become part of his volunteer reach-out effort.
Great idea - if approached, I bet the childish madman Ahmadinajhad, in a fit of pique, would fund preservation.
Someone needs to ask Iran, regardless. It would make a point if nothing else.