The Eiffel Tower stands in Ares Square on the right bank of the Seine River in the center of Paris. 1889 was built to welcome the Paris World Expo. It was named after Alexandre Eiffel (1832- 1923), the designer and outstanding architectural engineer of the tower. Alexandre Eiffel is a famous large-scale project undertaker in the field of metal construction in the world. His company has built more than 100 famous buildings all over the world, such as the Statue of Liberty, the steel skylight in the annex of Louvre Department Store (1879), the dome of Nice Observatory (1886), the gate of Panama Canal, and the Third China Bridge. One of the last works of this "steel magician" is the Eiffel Tower. He built the Eiffel Tower with the sincere cooperation of famous engineers Moles Ketchelling, Miao Lei Nujil and architect Stephen Sovester, and finally achieved this great building. This project officially started in July 1887, and it took five months to lay the foundation. Finally, it took 300 workers 2 1 month to assemble all the metal parts. The Eiffel Tower is 320.7 meters high. It is a hollow steel frame structure, weighing 9000 tons. It shares more than 6,543,800+8,000 metal parts, which are riveted into a whole with more than 6,543,800 rivets, all supported by four thick concrete piers. The whole tower is divided into three floors: the first floor is 57m, the second floor is 1 15m, and the third floor is 276m. Each floor has a high hurdle platform for visitors to overlook the beautiful scenery of Paris. When the sky is clear in Wan Li, people can see the scenery as far as 70 kilometers from the tower. It is said that the number of tourists who have climbed the Eiffel Tower has already exceeded 6,543.8 billion. Since its completion, the Eiffel Tower has been widely praised by people. American scientist Edison praised the designer of the Eiffel Tower as a "brave builder of magnificent buildings"; The painter Picasso once painted a beautiful picture for the iron tower; Musician Pohlner wrote the immortal ode "Father of the Bridge" for this tower. Today, the Eiffel Tower, a unique and magnificent building in the world, still displays the wisdom of human beings. It is not only a monument that attracts tourists, but also a symbol of this beautiful city with a long history.