The Eiffel Tower, or La Tour Eiffel as it’s known in French, is perhaps the most famous tower in the world. The tower was built the entrance arch to the 1889 World’s Fair. While it is a world-renowned landmark today, that was not always the case. Many roundly criticized the lattice Tower, but views toward the structure have changed over the past 130 years. The Eiffel Tower, located on the Champ de Mars, is the tallest structure in Paris and welcomes more than 6 million visitors per year, making it the most-visited paid monument in the world.