Eiffel Tower
Eiffel Tower (French: Tour Eiffel) is an iron tower with a height of 324 meters, there are in Paris, in the far north-west of the park Champ - de - March, near the River Seine. Established by Gustave Eiffel and his aides on the occasion of the International Exhibition of Paris in 1889, and was named tower 300 meters in the opening, this became established symbol of the French capital, a tourist site first: It represents the ninth site French most visited in 2006, and is also the first teacher in terms of the number of visitors ; as the number of 6.893 million visitors in 2007. Taller of 313.2 meters, remained the Eiffel Tower for a period of 41 years teacher highest in the world. The height was increased several times to install several antennas, to a height of 327 meters since March 8, 2011. Used in the past in many scientific experiments, and used today in the broadcast radio and television programs.Design and ConstructionBegan construction work on January 26, 1887, and lasted for 26 months with the participation of nearly 50 engineers and 300 workers; were in the first five months building foundations while took to build the tower one and twenty months following, ending all business on March 31, 1889. The tower was officially opened on May 6, 1889.The period in which construction 1887-1889 record, and given the tools available in that era and compare it with the accuracy and magnitude that characterized this building.The tower consists of 18.038 piece of iron and 2.5 million overall nail and weighs 10,100 tons, which is based on four pillars composed between the base dimensions of 125 * 125 meters with an area of 15,625 square meters (m 2).
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