This is what you get when Bazz and I go "hey, lets pick a spot and build a PvP arena

(It's not finished yet, but I thought I'd post pics)
First off we picked a spot that looked reasonable... close to spawn (so the walk back when you die in combat isn't too long)... and large enough. So then we set about marking out a 40x40 square.... which we later found was too big (remove blocks), then not big enough (add more), then not big enough again (add more)... and so on
The plan is that the floor is cobblestone with a layer of sand on top, which can be removed and snow put down for snowball fights... or maybe flooded for boats etc.
Then we set about testing some designs for the stadium seating section... while the cobblestone floor layer was added.
With the help of many generous souls, the arena ("TOGosseum") began to take shape...
Made more challenging by the spawning of mobs inside!
... and we've connected it to the Fortress with another Sky Road (in keeping with the modifications I made to the existing skyroad).... which fits the theme of the arches in the TOGosseum... (not yet finished either - ran out of fences!)
More pics:
The Arena pictures by togminecraft - Photobucket
If you come to visit, be aware that it's not well lit enough to prevent mobs - particularly on the top of the levels... and PvP is enabled, though we're not supposed to be attacking people there until it's finished being built :P So if someone runs at you with an axe in hand, be afraid.... and don't teleport to someone and get your head placed between someone's pick and the block they were smashing

(right Manuzza

)