Entrance: huge square yard surrounded by a wall. Idk why I even built a door there. I never trade or go outside.
Subterranean levels: Clover design. 4 rooms per z-level, stacked on top of each other. Stairway at the center. Quick access to everywhere. Tapping the benefits of 3d.
Maysomething tileset. The three long grey wavelines along the north wall are slabs. In memory of the fallen ones. Or squashed ones, rather. Plenty of elf, dwarf and goblin parts to go around outside the walls. Note that each room can be expanded. I prefer 6x6 - two workshops per wall. The 9 tiny circles in a straight line at the entrance are cage traps.