I am a 16 year old Canadian citizen hoping to travel with my father from Canada to Belgium, then intending to take the train alone to Germany and stay in Cologne, where I would stay a few nights in a hostel (Jugendherberge/youth hostels in Germany allow those 14+ to stay alone with written parental permission, which I would of course have). I would then head on to France (Paris) by train and meet back up with my father there.
Is this a feasible plan or will I run into trouble crossing the German or French borders? Is it necessary to provide additional documentation (another letter from parent, proof of ticket out of Paris back to Canada?)