The Eiffel Tower was originally intended to be a temporary structure. It was built for the 1889 Exposition Universelle (World's Fair) in Paris and was meant to stand for just 20 years.
Tallest Structure at the Time
The Eiffel Tower held the title of tallest man made structure in the world title until the completion of the Chrysler Building in New York City in 1930.
The tower is held together by over 2.5 million rivets
Eiffel Tower is visited by over 7 million visitors per year
The Eiffel Tower can shrink in height during very cold weather due to the contraction of iron, and it can also sway up to 6-7 centimeters in the wind.