If you visit Hiroshima, there are two major free things to do in Hiroshima you should not miss out on. Of all the unique things you should see here, you should visit Hiroshima Peace Memorial Park, all of which is free if you do not go inside the Hiroshima Peace Memorial Museum (which has an entrance fee). You can also enjoy the views of Hiroshima Castle for free. You can even easily do both in the same day – here’s a peek at what you might see from my visit in late November 2018.