A few weeks ago, I envisioned an idea for a tier-based set of sniper towers. Usually in the beginning, I only would use (2)Vertical 1x5's for the tier, and about a total of 3 sniper windows.
Anyways, I was quite bored a few ago, and decided to load up a LAN server and try and create a base with an insane amount of tiers. So, here it is, and unpractical it be. Although it is fun to play on. ;D
http://www.youtube.com/watch?v=-UrKLw0EE3U
Above is a link to a simple fly-around movie of the base, recorded just for fun, so that I can
look back at it and remember the good times. ^__^
The day after I built this, a good friend and I went on an online server and actually built it again but that time, was able to play a full game online with it.
The biggest problem though with this base, is a rocketeer can just 'RJ' into the base, then climb the ramps up a few tiers, and just jump into the flag. So yeah, it's basically worthless in terms of that, but overall, it was a fun experience.