ok me and some of my friends decided we wanted to build an epic build and we decided on a Colasium including:
lots of space for interior building
wepon spawns for deatmatch
and spawns for well spawning
here are pictures:

Just starting the inner walls and finishing inner baseplate.

Finished inner arena starting outer arena.

Allmost finished outer arena (sorry for build in background not part of build).

A top down veiw of the arena one side of seats done.

Us finnishing the smoothing under the floors.

This is what it looks like finished.

Its good for DMs.

First team photo.

Second team photo
Builders:
GuyD: Designed build
Little Helper: Designed seats
MOO: An all round help
BlockHead Cafe Owner: Another all round help
Lance_J: Smalltalk
Please tell me if i missed your name from the list.
P.S feel free to give an X/10 rating
Download link below (correct me if im wrong) extract in saves folder.
http://www.mediafire.com/?dzs8vmpmubv