Saigon is an interesting and lovely (in a way) place. But it isn't the best place to see exciting tourist things as there aren't that many. One place to visit is the Reunification Palace. Little history lesson: Reunification Palace (formally Independence Palace) was the home and workplace of the President of South Vietnam during the Vietnam War. It was the site of the end of the Vietnam War during the Fall of Saigon on April 30, 1975, when a North Vietnamese Army tank crashed through its gates.
Though not the most glamourous of places to visit, there was some interesting things to see. Like most sights around Vietnam dealing with the war, propaganda was high but this is something you must expect. I was heavily unexcited during my visit but noticed that vietnamese people were really into being there. I imagined it would be like what visiting the White House was like for me as a child.