Paris is divided into twenty districts, the shapes of which resemble the shell of a snail. The seventh city district features a significant number of tourist attractions and can be considered as the representative one. There is the green Field of Mars with the Military School (French: École Militaire) built in the 18th century. The city buildings are overlooked by the Eiffel Tower – the most recognizable symbol of France. However, it is a must to know that it is not the highest architectonic structure of Paris.