1. 4 -- the number of base pillars, each of which is in line with one of the coordinates on a compass

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2. 1 million (or 5 million francs) -- number of dollars to build the tower, 80% of which Gustave Eiffel, its designer, offset; M. Eiffel was reimbursed most of the money through ticket sales in the first six months

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3. 18,000 -- number of parts used to assemble the tower

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4. 132 -- number of workers who built the structure

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5. 2.5 million -- number of rivets in the metal

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6. 1023 -- current height in feet of the tower (originally it stood only 986 feet)

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7. 10,000 -- weight in tonnes of the tower

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8. 12,000 -- weight in gallons of paint on metal, which is repainted every 7 years

usatoday.com
9. 60 -- number of degrees of the angle that the elevator follows up the tower

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10. 336 -- number of spotlights that light up the tower at night; gas lighting was used until 1909

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11. 1710 -- number of steps leading up to the summit

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12. 126 -- number of antennae at the top of the tower; zeppelins warning were received by the tower during World War I; Nazi messages were sent out from the tower during World War II

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www.ushmm.org
Source: www.history.com.
Note: For more information on the Eiffel Tower, read:
1. A Line from Linda, "The Gigantic Black Smokestack" dated March 30, 2012.
2. Eiffel's Tower, Jill Jonnes.
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