1. Something made up
of a number of parts that are held or put together in a particular way:
hierarchical social structure.
constructed, such as a building.
Now that that's out of the way we'll give you some choices as to the world's
longest standing structure:
The Warsaw Radio Mast that was in Poland and stood 646.38 meters or 2,120 feet
tall but collapsed in 1991.
Contender #2: The KVLY-TV mast in Blanchard, North Dakota
which stands 629 meters or 2,063 feet.
The tower is not self-supported and as a result
generally does not qualify, bear in mind that a rope dropped from a balloon is
technically a structure, also not self-supported, which could otherwise claim
the title of the world's longest structure.
Contender #3: The Petronius Platform in the Gulf of Mexico
which covers 610 meters or 2,001 feet from the ocean floor to the top.
Problem: Although the
Petronius Platform is a freestanding structure, it is supported by the water and
many believe that the part of it underwater should not count just as the
underground portions of a building to not count in it's height.
Contender #4: The CN Tower in Toronto, Canada stands
553.33 meters of 1,815 feet high.
There is no problem, the CN tower, at the very
least, is the world's longest freestanding above ground structure.
The CN Tower
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