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The metal structure of the Eiffel Tower has a mass of 7300 tons, or 7.3 million kilograms. The design of the tower is very space-efficient: if you melted down the pure iron* that it is made of, it would occupy a volume of only 930m3, equivalent to a sphere with a radius of just six metres.
Eiffel Tower, France. The Eiffel Tower is a 324-meter-high iron truss tower in Paris. He is in seventh District at the northwest end of the Champ de Mars (Campus Martius), near the banks of the Seine.