There is no passport like a passport. Some passports allow their holders to travel to almost every country in the world without a prior visa, while some of them restrict you from entering the vast majority of countries without spending time and money to obtain visas. More powerful passport, more countries you can visit visa-free. And vice versa. If you are curious about how powerful is your passport, look at The Henley Passport Index. It is a global ranking of countries according to the travel freedom for their citizens. The site provides a ranking of the 199 passports of the world according to the number of countries their holders can travel to visa-free. The number of countries that a specific passport can access becomes its visa-free ‘score’.