You could host that build with rocket launchers and sniper rifles and it would be awesome
It's not his, I duplicated three islands I built long ago around my server until I got what you see in the picture. I did this to quickly have a nice place to fly around using my planes. Not all islands even duplicated properly (missing bricks, didn't notice early enough) so it's not even a very practical build.
To be honest, I would really appreciate it if you could actually give
credit for the stuff you post here.