Wow nice idea Angela Dragon stone but I'm thinking for a house, -city outside and bus door for spiral door -inside is a regular house kind of like you can choose the blueprints -outside of your house is a dark greenish and you go up stairs to get to the door to inside
a really cool place would be like merle's castle, but bigger. Out side it could be like the Commons with the bridge and all with the death school being a basement.