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[[Image:Sears Tower.jpg|thumb]]

[[Image:Sears Tower from ground.jpg|thumb]]

The '''Sears Tower''', recently renamed as the "'''Willis Tower'''", is a privately built spectacular skyscraper in [[Chicago]] which stands at 108 stories.  It was completed in 1973 and eclipsed the [[World Trade Center]] in [[New York]] as the tallest building in the [[United States]], a title it holds to this day.

The '''Sears Tower''', now named the "'''Willis Tower'''", is a privately built spectacular skyscraper in [[Chicago]] which stands at 108 stories.  It was completed in 1973 and eclipsed the [[World Trade Center]] in [[New York]] as the tallest building in the [[United States]], a title it holds to this day.

It is a marvel of engineering, sustaining the high winds in Chicago so well that the maximum wind draft at the top of the building is merely one foot.  Its successful design consists of:<ref>http://www.pbs.org/wgbh/buildingbig/wonder/structure/sears_tower.html</ref>

It is a marvel of engineering, sustaining the high winds in Chicago so well that the maximum wind draft at the top of the building is merely one foot.  Its successful design consists of:<ref>http://www.pbs.org/wgbh/buildingbig/wonder/structure/sears_tower.html</ref>