 When we see the Jews marching across the bridge into the ghetto,  this is not the direction they would have walked in real life. Since  the movie company couldnt get permission to film on the other side  of the bridge (the actual location of the Jewish ghetto) the actors  are walking the wrong way. Also, a large modern radio tower exists  in direct view when walking in the correct historical direction  across the bridge into the Krakow ghetto