How much can the Eiffel Tower expand?

Thermal expansion is when a material changes dimensions while it undergoes temperature changes. The tower expands and contracts 15 cm from the hottest to the coldest day.



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The Eiffel Tower is the eldest. The tallest tower is Burj Khalifa (828 metres) and the shortest is the Bratislava UFO (95 metres).

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In fact, the Tower has been repainted for over 130 years, about once every 7 years. So if it is repainted, the Eiffel Tower can last... forever.

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What Are the 11 Most Interesting Facts About the Eiffel Tower?
  • It Was Designed by Gustave Eiffel. ...
  • It Took 22 Months to Complete. ...
  • The Eiffel Tower Is Made of Iron. ...
  • The Eiffel Tower Has Three Floors. ...
  • It's as heavy as an Entire Freight Train. ...
  • The Eiffel Tower Has to be Repainted Every 7 Years.


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The Eiffel Tower's lighting and sparkling lights are protected by copyright, so professional use of images of the Eiffel Tower at night requires prior authorization and may be subject to a fee.

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While the Tower has a total of 1,665 steps from the ground to the top, you can only climb 674 of them, from the ground to the second floor (327, then 347 steps). You cannot take the stairs all the way to the top from the second floor, as this section is not open to the public for safety reasons.

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Metal absorbs the heat, causing the Eiffel Tower to grow by 6.75 inches. On the other hand, it shrinks during the winter due to thermal contraction caused by freezing weather. So, the Tower shrinks between six and seven inches, depending on the weather conditions.

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The Tower lights and beacon are lit up every evening from dusk until 11.45pm. As soon as it gets dark, the Eiffel Tower's golden lighting switches on automatically within less than 10 minutes, thanks to light-sensitive twilight sensors.

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The Eiffel Tower is made of puddle iron, a material that could last almost forever if it is repainted regularly. However, several factors pose a threat, including rust, pollution inherent to its location in a big city, bird droppings and the weather.

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The $480 million estimate from Pricing the Priceless: The claim is from 2011 and a lot has changed in the past decade.

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City of Paris ownership Today, the City of Paris owns the Tower and has entrusted its management to a development company (SETE: Société d'Exploitation de la Tour Eiffel) of which it owns 99% of the capital. Bertrand Lemoine is an architect, engineer and historian.

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