What's Your Best Minecraft Creation?

I'm too lazy to take a screenshot, because I want to mention a few things I'm proud of.

One thing I'm proud of is a massive castle in the air. This goes back a LOOOOOOOONG time. Back when I first started my first world, I went off in search of a place to make a home. Not finding a nice cave, I created my own in the top of a hill near the coast. This was all well and good, but soon enough I was not content with my little flat. So I expanded. But I couldn't just push out to the sides. So, I created a labyrinth of tunnels underneath, the farthest of which ends up in a door on the side of a hill a good distance away. But I soon grew upwards, into a cabin of cobblestone. I also built a field in which to test redstone, and it had a floating house, between me and the coast. It was only two or three dozen blocks away, at any rate. Then, in the middle, I built a great raised platform, featuring its own stuff and REDSTONE CONTROLLED DOORS!!!

If you're reading this, you realize I grow bored quickly.

So, I soon built another platform, and another, and another, and connected them all to each other. Now, I have a massive net in the sky to call home. But I wasn't done. I decided to make the grandest house of all in the sky, over my spawn, and have it link up with the rest. I soon did that, and it's beautiful. And it's all one big construct.

Next, my clock circuit. Fairly self-explanatory, and it has its own platform on what I shall now call my neural net.

Also, I have a four-bit bitwise-and and an 8-bit bitwise-and calculator. The 8-bit doesn't have room for output, because my 'neural net' is complex, but they both are functional.

And finally, I have my prized cannon. Perfectly engineered, powerful, and self-timing to boot, it's an awesome, and fearsome, machine. I mainly use it for mining, but it's been used for testing too. I've recently incorporated a logic gate circuit which has the perfect delay for launching. Awesome.

DUCK GOD

I am currently making a city on a server right now. When its done I will post pics.

Here it is at the moment. Not as big as I would like but its going to have a lot of underground things:

In Creative: I've made a copy of an Alabama Civil Courthouse. In SMP: I made a secure room with a redstone combo lock with a 4 bit combo.

In server territory: I helped develop minerCPP, the first c++ custom server available for minecraft.