Kraków and Silesia by train

Travelling by train in Poland is without doubt one of the most interesting experiences because you have the chance to take a fine leap into the past by travelling on old trains dating from the 70s and 80s, I believe. For me, who am 26 years old, it was a new and pleasant experience. These trains are nevertheless clean, fairly punctual and super cheap. Wrocław and Kraków are 2 wonderful cities not to be missed by anyone going to Poland. I recommend visiting Auschwitz with a guide.