I know that when your house gets attacked by creepers you don't wanna look like this. So I threw together a few walls that can and will take a creeper or TNT blast and still stand.
Step 1: Explosion Proof Wall
I am only showing you how to make a segment of my wall. you can continue to build of the segment I showed you. This is the original wall that I came up with, it's pretty simple. just follow along with my pictures and notes and you should be fine.
Step 2: Defense Wall
I am almost certain that some of you might want to keep the creepers away from your house entirely. The other wall only kept them out. it did nothing to keep them out. so this step will explain the slightly more complicated "defense wall" Also, the lava will break the ladders so if your doing that you might want to take the ladders off.
Step 3: Retro Castle Wall
And for all you people who just want a nice and awesome looking wall to go onto their house/castle, I give you, a retro modification on the original wall.