The Old & New WTC

http://mattmarello0x2.blogspot.ca/2009/02/911.html

http://www.cbsnews.com/stories/2010/02/18/60minutes/main6220282.shtml?tag=currentVideoInfo;segmentUtilities,
www.cbsnews.com/video/watch/?id=6228927n&tag=contentMain;cbsCarousel,
www.cbsnews.com/video/watch/?id=6228842n&tag=contentBody;housing
-
The Two Key Towers of Mecca & NYC
http://jfdatalinks.blogspot.com/2009/08/blog-post_05.html

Domes and Stadiums

Air-supported Domes

BC_Place Stadium

http://www.bcplace2011.com/#home

-
The Tokyo Dome opened on March 17, 1988. It was intended to be part of a larger entertainment area like the 1965 Astrodome complex.
-
The Hubert_H._Humphrey_Metrodome opened on April 3, 1982.

http://en.wikipedia.org/wiki/Vikings_Stadium
http://en.wikipedia.org/wiki/Target_Field
-
The Pontiac_Silverdome opened on August 23, 1975 & was closed in February, 2006.
http://en.wikipedia.org/wiki/Pontiac_Silverdome#Usage_after_Lions.27_move_to_Ford_Field -
The Georgia_Dome opened in 1992. http://skyscraperpage.com/cities/?buildingID=1998
-
2012 Olympic_Stadium_(London)
Wembley_Stadium
http://skyscraperpage.com/cities/?buildingID=6808
The London Millennium_Dome is situated on the Greenwich_Peninsula & was completed in 1999.
-
A fine example of the Multi-purpose_stadium configuration & Capacity concept can be found at the Louisiana_Superdome. http://skyscraperpage.com/cities/?buildingID=6437

http://www.worldstadiums.com/stadium_menu/stadium_list/100000.shtml

http://jfdatalinks.blogspot.com/2010/04/south-philadelphia-sports-complex.html

http://en.wikipedia.org/wiki/Reliant_Park