Eiffel Tower

Named after its designer, Gustave Eiffel, the Eiffel Tower is the tallest building in Paris and one of the world famous structure. More than 200,000,000 people have visited the tower since its construction in 1889, including 6.7192 million in 2006, making it a monument paid the most visited in the world. Including the antenna as high as 24 m (79 ft), this structure has a height of 325 m (1063 ft) since 2000, the same as a conventional 81-story building.
When the tower was completed in 1889, it became the tallest structure in the world - a title retained until 1930 when the Chrysler Building in New York City (319 m - 1047 ft) is complete. The tower is now the fifth-tallest in France and the highest in Paris, with the second highest structure of the Tour Montparnasse (210 m - 689 ft), although it will be surpassed by Tour AXA (225.11 m - 738.36 ft).

The metal structure of the Eiffel Tower weighs 7300 tons while the entire structure including non-ferrous component weighs 10,000 tons. Depending on the temperature, the spire can be away from the sun's 18 centimeters (7 inches) due to expansion of iron on the side facing the sun. The tower is also swinging 6-7 cm (2-3 inches) in a windy atmosphere. As a demonstration of the economy of the building, when 7300 tons of metal structure were melted, it would fill 125 square meters with a depth of 6 cm (2:36 inches), which means the iron density of 7.8 tonnes per cubic meter. The tower has a mass less than the mass of air in the cylinder with the same dimensions, and 88.3 324 meters radius. Weight of 10 100 ton tower compared with 10 265 tons of air.

The first and second levels are accessible by stairs and elevator. A ticket booth at the south tower base sells tickets to the stairs which begin at that location. In the first platform the stairs continue up from the east tower and the third level summit is only accessible by elevator. From the first or second platform the stairs open to all who go up and down depending on if they have to buy lift tickets or tickets stairs. Number 9 steps to the ticket counter at the bottom, 328 to the first level, 340 to the second level and 18 to the lift platform on the second level. When out of the elevator on the third level there are 15 steps up to the upper observation platform. Number of steps printed periodically on the side stairs to give an indication of the ascent. Most of the ascent to the scene directly beneath and around the tower although short steps beebrapa closed.

Treatment consists of tower procurement of 50 to 60 tons of paint every seven years to keep it from rusting. To maintain the appearance of the visitors below, three different colors used on the tower, with a dark color on the bottom and the lightest on top. Paint color changed; the tower is painted brown-gray. In the first level there is an interactive console that tells the color of the next painting. Architect of the Eiffel Tower are Emile Nouguier, Maurice Koechlin and Stephen Sauvestre.