Warsaw radio mast
The Warsaw radio mast was the tallest structure in the world from 1974 until its collapse in 1991. Designed by Jan Polak, it was 647 meters (2,120 feet) tall and weighed 550 tons. Construction was finished on May 18 1974 but broadcasts were officially launched on July 30 1974. The mast was located in Konstantynów, Poland, and was used by Warsaw Radio-Television (Centrum Radiowo-Telewizyjne) for long wave radio broadcast. Signals from its 2 megawatt antenna could be received across all of Europe and North Africa.
On August 8, 1991, the mast collapsed during renovation work. Three people were killed and 12 injured when it fell. In 1995 the Polish government proposed rebuilding the tower, but this was successfully opposed by local residents.
With its collapse, the KVLY-TV mast outside of Fargo, North Dakota, USA, became again the world's tallest structure, standing at 628 meters (2,063 feet) tall.
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