The Eiffel Tower
Built by Gustave Eiffel in 1889 for the Exposition Universelle, the Eiffel Tower is 300 m/984 ft tall. At the time it was built, it was the world's tallest free-standing structure.
The Eiffel Tower stretches approximately 300 m (1000 ft) high. Including the 20.75 m (70 ft) antenna, the structure is 320.75 m (1070 ft) high, which is about 81 stories. Completed in 1889, the tower replaced the Washington Monument as the tallest structure in the world, a title it retained until 1930, when New York City's Chrysler Building (319 m/1063.33 ft tall) was completed (although the tower was still taller if the respective spires of the two structures were excluded). In 1902, it was struck by lightning, which caused builders to reconstruct 300 feet of the top later in 1902-3. The lights illuminating the tower also had to be replaced, due to short-circuiting.
The tower is the second-highest structure in France, after the 350 m Allouis longwave transmitter, built in 1930. The Eiffel tower is the highest structure in Paris. The second-highest structure in Paris is the Tour Montparnasse (Montparnasse Tower), at 210 m.
The iron structure of the Eiffel Tower weighs 7,300 tons, and the total weight is 7,300 tons. The number of steps to the summit has varied through various renovations: At the time of construction in 1889, there were 1665 steps to the summit platform at 300.65 m; after renovation in the early 1980s, there were 1920 steps; and today there are 1660 steps (although it is not possible for the public to reach the summit via the stairs—elevators are required beyond the second platform).
Depending on the ambient temperature, the top of the tower may shift away from the sun by up to 8 cm (3.25 inches), due to expansion of the metal on the side facing the sun.
Maintenance of the tower includes applying 50/60 tons of three graded tones of paint every seven years to protect it from rust. However, few people realize that the tower is actually painted three different colors in order to make it look the same color. The colors change from dark to light from top to bottom, but it looks the same because of the background (the sky being light and the ground being dark). On the first floor, there are interactive consoles hosting a poll for the color to use for a future session of painting.
I vote pink.
The images used are courtesy of Scrapbooking graphics.com and art-e-ology.