The Eiffel Tower is a steel structure located on the Champ-de-Mars park, next to the Seine River, Paris city. Originally named 300 meter Tower, this work was designed and built by engineer Gustave Eiffel and his colleagues from 1887 to 1889 on the occasion of the 1889 World Exhibition and is also a celebration. 100 years of the French Revolution. The original height of the building is 300 meters if according to the design, but the antenna on the top helped the Eiffel Tower reach a height of 325 meters. Since its inauguration in 1889, the Eiffel Tower is the tallest building in the world and has maintained this position for more than 40 years. From the beginning, in addition to functions for tourism, the Eiffel Tower was also used for scientific purposes. Today, the tower continues to be a radio and television broadcasting station for the Paris metropolitan area. Becoming a symbol of the "capital of light", the Eiffel Tower is one of the most famous structures in the world. Since its inauguration until 2007, the tower has had more than 236 million visitors. Particularly in 2007, the Eiffel Tower welcomed nearly 7 million visitors, maintaining the position of the most attractive toll works in the world.