Barcelona

A world renowned-landmark of France, the Eiffel Tower is commonly associated with being an architectural wonder and an icon to represent the city of love and lights. It is hard to imagine Paris without the Eiffel Tower, but if everything had gone according to the original plan, the center of Paris would be bare. The Eiffel Tower was originally intended for Barcelona, but Spain rejected the project. This proved to be a costly mistake for Spain who missed out on being the home of this iconic landmark. The Eiffel Tower is the most-visited paid monument in the world with over 6 million people in visiting the tower last year.