The Eiffel Tower was built for the World's Fair in Paris in 1889 and was initially designed to be dismantled when the fair was over.
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Construction was completed on 31st March 1889 and Gustave Eiffel was the very first person to climb ALL the 1,710 steps! It remained as the world's tallest structure in the world for 40 years!

To find out what the tallest building in the world is check out Jheni Osman's video on the Burj Kalifa:    • How did they build the world's talles...  

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