Minecraft wiki entry for Shelters, associated text: Ever wanted an area to see all the mobs in their epic glory? Build this! It's best if you use bricks, stone bricks, or stone. You'll also need fences or glass, and signs. First, build various pens for mobs. Place glass on all sides, or just one. Alternatively, you could make a deep pit and put mobs in it. Put a fence around the outside. When you're done with pens, place paths guiding players around. If you want it to look nice, place large fountains, flowers and hidden note blocks around. If you want it realistic, build restaurants, statues, and gift shops around. If you have hostile mobs in your zoo, you can use a name tag to rename them so that they do not despawn