The Eiffel Tower is a wrought-iron lattice tower on the Champ de Mars in Paris, France.
More than 250 million people have visited the tower since it was completed in 1889. In 2015, there were 6.91 million visitors. The tower is the most-visited paid monument in the world. An average of 25,000 people ascends the tower every day which can result in long queues.