The War Remnants Museum in Ho Chi Minh City first opened to the public in 1975. Once known as the ‘Museum of American War Crimes’, it's a shocking reminder of the long and brutal Vietnam War. Graphic photographs and American military equipment are on display. There's a helicopter with rocket launchers, a tank, a fighter plane, a single-seater attack aircraft. You can also see a conventional bomb that weighs at 6,800kg. American troops had used these weapons against the Vietnamese between 1945 and 1975.
http://www.vietnam-guide.com/ho-chi-minh-city/war-remnants-museum.htm