Located behind Arafat's Mausoleum is the newly opened Arafat Museum, in which you spiral up several floors of Palestinian history (not just Arafat related), and end up with an opportunity to view his living quarters and meeting rooms. This is another impressive museum that competes with the world's top museums on architecture and curation of content.
But the Arafat Museum has an additional benefit of being located on "hallowed ground". I agree with Ryan Holiday, who writes that "there is something to be gained from going to old places, places where people died or where great things happened. And that by standing on this ground we are transformed by it".
Not that everything Arafat did was great, but you get what I mean.