This piece of the medal contains fragments of iron that were removed from the Eiffel Tower and preserved during renovations in the 20th century. The outer part of the medal is meant to catch the light ...

Pro Tip: The regular lights on the Eiffel Tower turn on around dusk. The sparkling lights on the tower turn on for 5 minutes at the top of the hour (e.g. 8pm-8:05pm) once it’s completely dark.

Many reviewers recommended booking an evening tour for the chance to see the Eiffel Tower's sparkling light show, which takes place every hour on the hour from dusk until the tower closes.