This is the stadium I built for my server It has 2 floors a combatant floor(ground floor) and a viewing floor(1st floor) There are shops set on the ground floor color coded to make it easier to get around. there are areas to set up warps for the arena and such but I didn't include them. Also 5 billboards left blank for your needs. Plenty of areas to explore and is lit up very well. the center of the arena is not as to have natural spawning monster if you wish. I had a lot of fun making this and I hope you will enjoy killing lots of stuff in it. Here is a quick walkthrough of the build.