Here are some descriptions of some places mentioned in the story or mentioned in the letters written by the real German girls. It is worth considering these places, both as they were then and as they are now, as this gives a greater sense of what it might have been like for these young girls growing up in Nazi Germany.
A real puzzle is that Hitler constantly argued for more Lebensraum - “ living room” for Germans. Yet they had many wide open spaces. It was also quite difficult sometimes, for those who lived in the countryside, where bombs were scarcer and food more plentiful, at first at least, really to realise that they were at war.