Eiffel Tower

Due to thermal contraction, the iron structure of the Eiffel Tower contracts in colder temperatures, causing its height to decrease by as much as 15 centimeters (6 inches). Conversely, it expands in summer, making the tower taller, a noticeable effect of basic material physics on large structures.

Due to thermal expansion, the iron structure of the tower expands when heated by the sun, causing it to grow in height. Conversely, it contracts in colder temperatures, returning to its original size, a testament to the properties of its material.