First, keep the walls thick—pixel bricks stacked two blocks high with a layer of “steel” on top. Add a few tiers of watchtowers on each corner; that’s a quick visual cue that you’re not an easy target. Put a narrow gate on the front, then a dead‑end hallway that splits into two paths—one leading to a secret supply room, the other to a trap pit. On the sides, use a double wall with a moat of lava pixels; the lava looks flashy but keeps attackers at bay. Inside, leave a central courtyard with a big flag to show you’re proud. Finish with a rear wall that has a hidden elevator or escape hatch. That layout looks cool, feels solid, and gives you real defense.