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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.
1 The Eiffel Tower is 1,063 feet (324 meters) tall, including the antenna at the top. 2  Without the antenna, it is 984 feet (300 m). 3  It was the tallest manmade structure until the Chrysler Building was built in New York in 1930. 4  The tower was built to sway slightly in the wind, but the sun affects the tower more.