Paris celebrated the Eiffel Tower's 130th birthday with a light show at the famous monument.
The tower attracts nearly seven million visitors annually, making it France's most visited attraction.
Christophe Girard, overseeing cultural affairs at Paris's city hall said the recent fire at Notre-Dame Cathedral, which destroyed its spire and most of its roof, had awakened people to "the importance of our heritage", and that it "can disappear or be damaged".
The tower was built for the 1889 World's Fair and despite calls for its demolition in the years after the exhibition, it soon became the most iconic feature on the Paris skyline.
It stands at 324 metres in height and weighs 7,300 tonnes and was the tallest structure in the world for 41 years, until the construction of the Chrysler Building in New York in 1930.
A section of stairs from the tower sold for almost €170,000 last year.