If you decide to travel to any of this places you may not be able to leave.
Tourism industry has evolved over the years and it has remained one of the main sources of income generation for many countries. Throughout the world there are places expecting you to visit for vacations and get you excited about their culture. Florence, Cusco or Tokyo will be welcoming you any time with open arms but some other countries are either one hundred percent impossible to get in or their visitors, in order to proceed with their stay, would probably face tough or repressive authorization processes with the authorities. The countries in this list struggle with government corruption, civil wars, and various crimes against humanity.