Did you know?  The famous Eiffel Tower actually grows taller during summer.

As temperatures rise, the iron structure expands, making the tower up to 15 cm (6 inches) taller than its usual height.

This incredible phenomenon is caused by thermal expansion, a basic principle of physics that affects metals when they heat up.

Imagine a landmark becoming taller every summer without any construction work! 

Nature and science combine to create one of the most fascinating facts about the world's most iconic tower.