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Step 1
Pick a location for your castle. Make sure the area is close enough to the ocean so it's easy to haul water, but also far enough away that the tide won't destroy your castle before it's done.
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Step 2
Use sand that is fine. Coarse sand is much more difficult to shape.
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Step 3
Pour a few buckets of water onto the area where you want to build. Then pack the sand down. This will create a solid base on which to build your sand castle.
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Step 4
Create a mound of dry sand on top of your base.
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Step 5
Build your basic castle and turrets by putting sand into a bucket or plastic mold. Add layers of dry sand and water, using just enough water to make the sand stick together. Pack the sand firmly into the bucket.
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Step 6
Turn the bucket over onto the area where you want the structure. Jiggle the bucket a little bit to help loosen the sand and pull it off gently, leaving behind a cylinder of sand.
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Step 7
Use your hands, tools or other molds to create smaller structures, including walls and even arches. You might need to add more water when using your hands.
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Step 8
Spray water with a spray bottle onto the surface of the sand if it begins to crumble.
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Step 9
Sculpt doors, windows, bricks and anything else you like using your tools.
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Step 10
Dig a moat around the outside of your castle after it is complete, but be careful not to weaken the base that your sculpture is built on.
