Note to Moderators: I am in no way associated w/ this. I just found this really intresting and I'm sure some people here would find it helpful or as cool as I did....

Description of Towers

Slashdot Article

There are some really cool facilities out there. The /. article says their going for $25k which seems like a steal for some of these places...

They were originally set up for long distance microwave transmissions across the mid-west.

These would be some really fun places to put a datacenter. I think the only problem would be connectivity. How many companies you know would want to string a DS-3 out there... Or how much would it cost to do so ...