Here are some of my micro scale medieval MOCs. First The Mill:
The mill wheel is built of two cart wheels, and the trees are each made of 1 or 2 1×1 cones on a brown stud. I built the boarder with x1 black plates. Next is The Mountain Top Hut:
The roof of the hut is a ninja hat and I used jumper plates and 1×1 plates to build the stares. Now a look at my Waterfall Castle:
I used sideways building to attach the waterfall to the rock-face and I built technic bricks into the sides so that it can modularity attach to other MOCs.