The Eiffel Tower 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 1889 World’s Fair, it was initially criticized by some of France’s leading artists and intellectuals for its design, but has become a global cultural icon of France and one of the most recognisable structures in the world. The tower is the tallest structure in Paris and the most-visited paid monument in the world: 6.98 million people ascended it in 2011. The tower received its 250 millionth visitor in 2010.