[Build Submission] Abandoned tower

Since my last post didn't get any attention, here's another build. It's a tower with a tree growing through it, like my last one, I wanted to build something that showed that nature takes control of things. I can assure you can get from the bottom to the top easily.

http://imgur.com/a/bNqpU

http://www.mediafire.com/?el6q3cndsdszbty