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The
Willis Tower
(formerly the Sears Tower), the world's largest building from 1973 to 2004. The tower's innovative
bundled tube structure
was designed by
Bruce Graham
and
Fazlur Khan
.
Photo credit:
Soakologist
From Wikipedia, the free encyclopedia
<
Portal:Illinois
|
Selected picture
The
Willis Tower
(formerly the Sears Tower), the world's largest building from 1973 to 2004. The tower's innovative
bundled tube structure
was designed by
Bruce Graham
and
Fazlur Khan
.
Photo credit:
Soakologist
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