This iconic Parisian landmark is not as static as it may seem!

The Eiffel Tower can actually increase slightly in height during the summer months due to the thermal expansion of the iron from which it is constructed.

Here are some key details:

• The Eiffel Tower is made of puddled iron (a type of wrought iron), which expands when heated and contracts when cooled.

• In summer, when temperatures in Paris can reach up to around 30°C (86°F), the iron heats up and expands.

• This thermal expansion causes the entire 324-meter (1,063 ft) structure to slightly increase in height.

• Estimates suggest the Eiffel Tower can grow by as much as 15 cm (6 inches) taller during very hot summer days.

• Conversely, in winter when temperatures are colder, the tower's iron contracts and it shrinks back down closer to its original height.

So in essence, the iconic Eiffel Tower exhibits this fascinating property of expanding and contracting ever so slightly with the seasonal temperature changes, all due to the thermal expansion characteristics of the wrought iron used in its construction over 130 years ago.