Hey!! So, what I have here is a gate system with a wall of water as an extra measure of protection. I have started a city and the only things I have set up are two bedrock prisons. One with an actual prison, and the other is a zombie vault. I got the idea from resident evil apocalypse. Nearby is an NPC Village so, have fun!!

Download here :)
min.us/mbefuTydlD#1o