I did this on survival mode purely for the fun and satisfaction at the end result. I have currently built Helms Deep and Edoras however I still need to put some finishing touches on Edoras before it is finished. So yes, tell me what you think and whether you think I should do more of these. If you want to keep up to date on the project follow me on twitter @theheeteepee
Helms Deep took me probably around 14 minecraft days to excavate and build the enviornment, 14 more to gather supplies and about 14 to build approximatley. Edoras is taking a lot longer due to having to build the actual mountain which it sits on.
Helms Deep artwork which I based mine largely upon:

My version:

My version at night time:














