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How many rivets hold the Eiffel Tower together?

2.5 million
rivets
2,500,000 exactly, give or take
The Eiffel Tower is held together by 2.5 million rivets, each one hammered in red-hot by four-man teams in 1889.SOURCESociété d'Exploitation de la Tour Eiffel (official tower operator)
Scale check: 2.5 million is roughly everyone in Birmingham.
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