The Eiffel Tower or La tour Eiffel is a tower located on the Champ de Mars in Paris, France. It was named after the engineer Alexandre Gustave Eiffel because his company designed and built the tower. It is one of the most well-known attractions in the world. It was erected in 1889 as the entrance arch to the World’s Fair, which was held in 1889. It is the tallest structure in Paris city and one of the most-visited paid monuments in the world. It is 324 metres tall and its base spans the area of 125 square metres. It is both global cultural icon of France and one of the recognisable structures in the world. It assumed the title of the tallest man-made structure in the world, a title it held for 41 years, until the Chrysler Building in New York City was built in 1930. However, the Eiffel Towe is now taller than Chrysler Building because of the additional aerial, which was built in 1957 on the top of it. The tower has three levels, where restaurants are located on the first and second and the observatory’s upper platform, which is 276 above the ground, is located on the third level. In 2011 it received 6.8 million visitors. 250 million people visited the tower in 2010.