Standing on a 410 foot
square
base, near River Seine, the Eiffel tower's lattice work piers curve
gracefully
towards each other until they unite to form a single structure. It is
built of
15,000 pieces of wrought iron and joined with two and half million
rivets.
Eiffel
tower has in it
three
viewing platforms, one at 187 feet, second at 377 feet and the third at
899
feet height. On a clear day, the view from the third platform is 42
miles.
Because of the open lattice work, even in the strongest winds, the
maximum sway
is only 5 inches.