Eiffel Tower, structure designed by A. G. Eiffel and erected in the Champ-de-Mars for the Paris exposition of 1889. The tower is 984 ft (300 m) high and consists of an iron framework supported on four masonry piers, from which rise four columns uniting to form one shaft. Three platforms at different heights (the intermediate platform just above the junction of the columns is 644 ft/196 m high) are reached by stairs and elevators. On the top of the tower are a meteorological station, a wireless station, and a television transmission antenna.
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