Are structures built in Minecraft copyrightable?
Specifically, can you use copyright law to prevent others from distributing world files containing only original structures you built (and not anything naturally generated)?
This, to me, seems to be an original, concrete work of authorship, and so should be copyrightable. However, I can't find any credible statements about this specifically regarding Minecraft maps.
Hopefully the answer would be consistent internationally, but I am particularly interested in the US.