Awesome tower. I like the purple.
Another question on mining out vast areas. What technique do you use? I started off just hacking everything in range of my pick but soon discovered if I made 2 high x 1 wide corridors the length of the area I wanted to clear, then stood at one end looking up, mined the 6 blocks vertically above me and walked forward doing that to the other end of the corridor I would be more efficient. Effectively cutting out 8 block high strips. Once a "floor" was clear I went up above (effectively to stand on the 9th block, the one that the pick would not reach) and repeat. Finally I would come top down removing all the floors. How did you guys do it?