Eiffel Tower

the tower is named after its designer, Gustave Eiffel, At the time the tower was built many people were shocked because of its extremely challenging. Eiffel was criticized for the design and accused of trying to create something artistic, or inartistic according to the perspective of others. Eiffel and his engineers, as renowned bridge builders, understood the importance of wind forces and knew that they were going to build the tallest structure in the world they have to withstand the wind. In an interview reported in the newspaper Le Temps, Eiffel said :

"Now for what I give primary concern in designing? Tower windproof. Alright! I certify that the curvature of the four outer edges, as mathematical calculation will give a good view of the strength and beauty , and give the impression to anyone who saw the overall sophistication of design. " Since the beginning of the 20th century, the tower has been used for radio transmission. Until the 1950s, a collection of tower cable extending from meeting until the end of the Avenue de Suffren and Champ de Mars. They were connected to long-wave transmitters in small bunkers; 1909, a permanent underground radio center was built near the south pillar and still exists today. On 20 November 1913, the Paris Observatory, using the Eiffel Tower as an antenna, exchanged sustained wireless signals with the Central United States Naval Observatory which used an antenna in Arlington, Virginia. Object transmission to measure the difference in longitude between Paris and Washington, DC
The tower has two restaurants: Altitude 95, on the first level (95 m, 311 feet, above sea level), and Jules Verne, an expensive gastronomical restaurant on the second level, with a private lift. This restaurant has one star in the Michelin Red Guide. In January 2007, a Michelin star chef Alain Ducasse was brought in to run Jules Verne.
Top observation deck, with a height of 275 meters, is the highest area of ​​architectural structures in the European Union, which opened to the public.
Passenger lifts from ground level to the first level are operated by a towing cable that is run by a large piston-powered water. When climbing arch, ride the elevator cabin a bit, but with a slight jolt every few seconds, to keep the floor nearly level. Elevator construction shown and opened to the public in a museum in one of the four pillars of the tower.