The Barbarian and Mob horde are coming you need to warn the castle but you to far away in the watch tower. You know what you need, you need a watch tower. This is a simple instuctable to compliment you awesome world.
Step 1: The Pillar
First make you stair pillar 3 blocks from the floor plain and simple.
Step 2: The Cross
Make a cross on the pillar the arms must be 2 blocks long. Then add a block in each corner.
Step 3: Box
Now make a box over the cross, the sides need to be 3 blocks long.
Step 4: Coal
Now add your first layer of coal blocks, then add 2 more with one block in the middle of the top.
Step 5: Your Done
Now just light it when the enemy is sighted. Some shots of it in use.