The Eiffel Tower
The Eiffel Tower (French: Tour Eiffel ,Arabic: برج ايفل ) is a wrought iron lattice tower on the Champ de Mars in Paris, France. It is named after the engineer Gustave Eiffel, whose company designed and built the tower.
Constructed in 1889 as the entrance to the World's Fair, it was initially criticized by some of France's leading artists and intellectuals for its design, but it has become a global cultural icon of France and one of the most recognisable structures in the world.
The Eiffel Tower is the most visited paid monument in the world; 6.91 million people ascended it in 2015.
The tower is 324 metres (1,063 foot) tall, about the same height as an 81-storey building, and the tallest structure in Paris. Its base is square, measuring 125 metres (410 foot) on each side. During its construction, the Eiffel Tower surpassed the Washington Monument to become the tallest man-made structure in the world, a title it held for 41 years until the Chrysler Building in New York City was finished in 1930. Due to the addition of a broadcasting aerial at the top of the tower in 1957, it is now taller than the Chrysler Building by 5.2 metres (17 foot). Excluding transmitters, the Eiffel Tower is the second-tallest structure in France after the Millau Viaduct.
Design and construction
Construction work began on January 26, 1887, and lasted for 26 months with the participation of approximately 50 engineers and 300 workers; where they were in the first five months building the foundations while building the XXI tower took the following months, ending all business on March 31, 1889. The tower opened officially in the May 6, 1889.
The period of 1887-1889 was the construction standard which, given the tools available in that era and compared with the extent of precision and magnitude that characterized this building.
The tower consists of 18,038 pieces of iron and 2.5 million total nail and weighs 10 tons, which is based on four pillars made up with each other base dimensions of 125 * 125 meters of any area of 15,625 m²