"Oooh! A rendering of Alexandra Palace in Minecraft? I wonder if they included the ice cream van because... wait, someone built a walking attack robot colossus?" That was a faithful recreation of the experience of browsing the Minecraft subreddit today.
Here's Cubehamster's Redstone Robot Colossus:
Essentially you're looking at a humanoid construction in festive red and green. To board you use a sky elevator and then follow a twisty path to a cockpit (it's a boat) from which you can reach the five levers which control the beast. There's a start/stop switch, the right mini nuke launcher, the left TNT nuke launcher, a precision longbow missile, and sequential Tomahawks.