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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.
When the Eiffel Tower was built in 1887 for the Universal Exposition it was meant to be temporary, but over a century later itâs still standing as one of the worldâs most iconic landmarks. More than 1,000 feet high, it was the tallest building in the world until 1930 and still towers over the rest of Paris.