I've been working on recreating (at least a small part) of Ultima Online within Minecraft. It has been a long process for what feels like a very small result (as is the glory of Minecraft).
I thought I would post a short video of what I have so far (this takes place in it's own area within a multiplayer server that a few friends and I run).
Update ***** 3/11/11 *****
Since my previous statement, I have added the foundations to more buildings (I have about a fifth of the buildings left to layout for the Western part of Britain), all bridges in and out of the peninsula, the docks, and shaped some of the land.
I still intend on shaping the land - which will involve a lot of water activity, adding more buildings - including transforming the existing foundations into finished products, and begging the eastern part of the town.
My biggest beef with the housing was the lag-factor. I got used to wide-open, empty spaces between the cities and would walk between them. When housing dropped, and the land-grab happened, all of a sudden, you'd see a large open space .................. and would run smack dab into the wall of a ****ing huge castle.... and the server lines were annoying too. Can't tell you how many times I died because a lich or a red was on the other side of a server line that I couldn't see.