Well I think I'll try to squeeze into this one, time constraints with school/work/business and all I think I might be able to pull something off. Hopefully I can compete with the rest of you (seems I will be going against some serious pros :p)

As to your question Some Guy

"Yeah let's give some kind of environment challenge a try. The object of this challenge is to create some sort of ruin. Whether it be ancient roman, realistic, cartoony, futuristic, medieval, stone age, under water, anything goes!"

I think your Chernobyl/Powerplant idea will fit into this broad spectrum