I just done 3 Pro-Wrestling Arenas and I posted it on YouTube. The first I did on Minecraft 1.7.3 (a year ago). The other on September, 2011. And the last & best I finished yesterday. I did the two big ones on Creative Mode. I hope you like them! I will release the download soon.
Video:
http://www.mediafire.com/?jyahdw6snn2p2k9