Eiffel Tower, French Tour Eiffel, Parisian landmark that is also a technological masterpiece in building-construction history. When the French. Buy your tickets from 11 to 17€ for the Eiffel Tower. You can buy your tickets online, or the day of the visit directly at the Eiffel Tower. Free for children under 4. Monuments of Paris: The Eiffel Tower. Designed by Gustave Eiffel for the Paris Exposition, this radical and aerodynamic structure was met with a mixture of.