Probably deserves to be in the radio section but i'm sure everyone can appreciate a good antenna after all everyone and i mean everyone has them, you can't watch TV without one or even use a phone...

http://www.youtube.com/watch?v=tXDQXkPm18k


The yagi and quad ones interest me most though....

 

Hello,

The antennas for 80 meter and 160 meter amateur bands are huge.

On this page there are a lot of antennas:
http://ac6v.com/antprojects.htm

Bertus

 

Ever see an elephant cage? - http://en.wikipedia.org/wiki/Wullenweber

 

Niceeeeee, i Want one, can anyone lend me the money I swear i'll pay it all back (in about 300 years or so)

 

I was at this site a few times... before Andrew took it down.
http://wikimapia.org/90636/NSGA-Homestead-AN-FRD-10-Array-Site-Alpha

http://www.navycthistory.com/homestead_intro.html

 

Hello,

How about the arrays of radio telecopes:
http://en.wikipedia.org/wiki/Radio_telescope

Bertus

 

Not huge but lots of them.
Iran.

Egypt

 

Obviously cable hasn't made much penetration into the local market.