The Eiffel Tower gets taller by up to 6 inches during the summer, when the temperature reaches as high as 40°C. Extreme heat causes the metal at the base to expand, increasing the height of the Eiffel Tower. It also causes the top of the tower to tilt away from the sun by up to 7 inches. That’s because Steel expands in hot and contracts in cold. So, The Eiffel Tower is six inches taller in summer than winter.
The height of the Eiffel Tower is 324 meters on average-changes depending on the season. When the hot summer sun beats down on it, thermal expansion causes the metal to grow. The tower can swell in height by as much as 15 centimeters (6 inches). But once the hot sun goes down, the expansion decreases.