Thesis deals with comparative study of two different magazines National Geographic and National Geographic Junior. Both magazines are published in Croatia and they cover the same or similar themes. The difference between those two magazines is in a design and different target group. The firs part of the thesis presents a review of the magazine and the main characteristic of the media through the parameters of the visual structure of the magazine . When we talk about the parameters that makes the visual structure, we think of the number of images and text elements in particular publication, their relationship, structure and many other things that makes a good magazine. With all that, it is necessary to harmonize all that elements of composition, witch primarily role should be transmitting the message. In the thesis is also presented one of the many composition solutions of the magazines National Geographic i National Geographic Junior, through the use of different grid systems. The examples will be analyzed and compared in the diversity of designs solutions of those two magazines, and their approach to the target group to witch they are intended. The second practical part of the thesis shows results obtained from analysis of survey research, witch shows the view of respondents with regard to the hypotheses that have been presented in this thesis.