World logos are great for (and popular with) any company that targets a global audience. You will also often find world logos in the travel and the communications industries. One of the challenges with world logos is to come up with concepts that will ensure a unique design... there is after all only one planet Earth (that we know of!) and only so many ways to draw the continents. One solution to this problem is in the graphical elements that are used in combination with the world image.