The Eiffel Tower is located in Paris on the Champ de Mars. Erected in 1889 as the entrance arch to the World's Fair, the tower is the tallest structure in Paris and the most-visited paid monument in the world. The tower stands 320 metres. The tower has three levels for visitors.
Work on the foundations started in 1887. The finished components, some already riveted together into sub-assemblies, arrived on horse-drawn carts from the factory in the nearby suburb of Levallois-Perret and were first bolted together, the bolts being replaced by rivets as construction progressed. The main structural work was completed at the end of March 1889.
The tower was an immediate popular success. The Eiffel Tower caused a violent polemic, meeting nearly unanimous hostility from the Parisian artistic world. Once the Tower was finished the criticism burnt itself out in the presence of the completed masterpiece, and in the light of the enormous popular success with which it was greeted. It received two million visitors during the World's Fair of 1889.