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It doesn't!
It wasn't. The Eiffel tower was made almost entirely of puddling iron, a type of wrought iron.
It is one of the 7 Wonders of the Modern World.
iron
Cast iron
It is one of the 7 Wonders of the Modern World.
The Eiffel Tower was made of steel, not rock.
The Eiffel Tower construction started in 1887, and ended in 1888. Although most people think the Eiffel Tower was made of steel, it was actually made out of puddled iron, which is a type of wrought iron melted. The Eiffel Tower was made out of 1808 pieces of puddled iron that were riveted together. The Eiffel Tower was built for the entrance for the World Exhibition, which was a celebration for the French Revolution. The Tower is now a national momentum of Paris. The many changes include a 160 meter long thermometer attached to the side of the tower, a skating rink on the first floor, a television antenna placed on top of the tower, a meteorology (weather) laboratory at the top of the Tower, and a printing press for a newspaper on the second floor.
The Eiffel tower is made of pig iron. They didn't trust steel as it was a relatively new material at the time the tower was built. It is not made of copper so that's why it hasn't turned green.
SETE (Société d'exploitation de la Tour Eiffel) - a company of the 'mixte' type, 60% owned by the Town of Paris, the rest private. Formed in 2005 to replace SNTE, which was wholly owned by the municipality.
Similer to what we use for the world trade center and our bridges
it is where you type in a symbol and word so all you have 2 do is write the symbol and it will make it the word and you can text messages from your phone on it!