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The Eiffel Tower (Tour Eiffel in French) is the most famous monument in Paris and is known worldwide as a symbol of the city itself and of France. Named after its designer, engineer Gustave Eiffel, who also built the internal structure of the Statue of Liberty. Is visited on average every year for about five and a half million tourists. In 2006 she was ranked ninth among the most visited sites in France, and is the most visited paid monument in the world, with 6,893,000 visitors in 2007 Since its opening in 1889, was visited by about 250 million people.
The property, with its 324 m is the highest of Paris, was built in less than two years, from 1887 to 1889; was supposed to serve as an entry Universal Exposition of 1889, a World’s Fair held to celebrate the centenary of the French Revolution. Inaugurated on March 31, 1889, was officially opened on 6 May that year after just 2 years, 2 months and 5 days of work.
To climb to the top there are two possibilities: the 1665 steps or two lifts transparent. The structure is divided into three levels open to the public, accessible either by lift by stairs. To the south-east of the tower stretches a grassy expanse where once were leaving the first hot air balloon rides.
When it was built, was recorded some resistance from the public, as it was thought it would be a little structure aesthetically valid (it is still underappreciated by some Parisians, who call it “the asparagus iron”). By the way, in 1909, the Eiffel Tower was in danger of being demolished because it challenged artistic and literary elite of the city; was spared only because it turned out to be an ideal platform for the antennas needed for the transmission of the new science of radiotelegraphy. However, it is generally considered one of the examples of art in the most extraordinary architecture and is unquestionably one of the most iconic symbol of Paris throughout the world and has been proposed for the seven wonders of the modern world.
The monument has maintained the record of tallest building in the world until 1930, when the Chrysler Building was completed in New York.
At 3rd level Gustave Eiffel had created an apartment in which he received the most distinguished guests; Today there are statues of the Eiffel along with Thomas Edison and his daughter Claire during the meeting that took place during the World Fair of 1889 in which Edison took a specimen of Phonograph.
The mechanisms of the elevators are original and run through 1889, the year 100 000 km.
Three hundred Iron assembled 18,038 pieces of forged iron, using the 2 and a half million bolts (that were replaced during the building itself, with hot rivets). Consider the safety conditions existing at that time, it is surprising to note that only one worker has lost their lives during the construction of the tower (during the installation of the elevators).
The tower is 324 m with its antenna (television antennas on the top are 20 m high) weighs about 8000 tons, but its foundations are descended from just 15 m below the ground level. For 40 years it was the tallest structure in the world. For its maintenance are also used 50 tonnes of paint every seven years. Depending on the ambient temperature the height of the Eiffel Tower can vary by several centimeters because of expansion of the metal (up to 15 cm higher than during the summer heat). On windy days on top of the tower oscillations can occur up to 12 cm.