Leading a stressful life that we are, every now and then we all like to change things up a bit by travelling, usually someplace exotic. When you want to take a vacation, you usually plan it for weeks, even months ahead of time, to make sure everything will work out the way you want to. We all take into consideration location, hotel reviews, cost and other things. However, there are some places in the world you should avoid, or be very careful upon reserving your tickets. When it comes to these fifteen cities, take notes, as these are the most dangerous places in the world.