40. The Eiffel Tower Grows Taller in Summer Due to Metal Expansion
Iron expands when heated. On hot summer days, the Eiffel Tower can grow up to 15 centimeters (about 6 inches) taller because the metal structure expands in the heat. It shrinks back slightly in colder weather.
You’ve seen photos and maybe visited famous landmarks, but never connected daily temperature changes to massive structures moving. If you’re over 35 and remember school science classes, this “obvious” physics principle suddenly makes iconic monuments feel alive and breathing with the seasons.
