Paris monument and hallmark: Eiffel Tower: 1889: During the evening of the tower's inauguration, 10,000 gas street lamps adorned the steeple and platforms. Two projectors on the tower top illuminated the other Parisian monuments below. The blue, white and red beacon lights were considered the most powerful in the world. 1900: Electricity arrives at the Eiffel Tower, as 3,200 lamps spotlight its framework and decorative arches. 1925-1936: André Citroën adds the first decorative lighting display to the tower. As an ad campaign, the name Citroën is sculpted from 250,000 colored lamps, which adorns three sides of the tower and is visible 30 kilometers away. 2003, June 21: The Eiffel Tower is once again covered in diamond-sparkling lights that are displayed for five minutes, every hour on the hour, from dusk until 2 a.m. (1 a.m. in winter).