OBDF 210 Castle

 Future Castle with a beautiful fountain.

1. Here is my first try. 

        

 I drew a simple image of castle's shape and I think it can help me build the castle quickly.

 2. I keep changing it because I felt not right, so I ended up only keep the base and the fountain.

 Using ExtrudeCrv to make it 3d, however, I found a problem when I making the door, only one side is open. (I already fix the problem)

 3.  I started to build the two towers, I use cylinder as base, polygon in the middle.
My original idea is only put a triangle on the top,  but I suddenly stretch the truncated cone. It looks weird but cool, a little bit futurism there. so I ended up use future as my theme.

 4. I add a little flag on the center of the tower, to make it more like a castle.

 Use control point curve tool draw the flag shape (better draw in front view), ExtrudeCrv make it 3d, and attach to the tower.