The Henley and Partners Visa free index 2018 lists the German passport as the most powerful in the world with a visa free access to 177 countries. My wife holds a Canadian passport and she is eligible to travel to 172 countries visa free. A US passport holder can travel to 173 countries visa free which is one more than Canada. We are curious as to which are these 5 countries which provide visa free access to Germans but not to Canadians and the one country which provides visa free access to US citizens and not to Canadians. Kindly elaborate.