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How to build a sand castle 
Choose a spot that won't get washed away. 
You could happily spend an afternoon building a city on the beach. If the tide is on its way in, sit down near the tide line, the wet sand farthest from the water.
OPTIONS: + Doing this will provide you with enough time to pamper yourself, while also allowing you to avoid incoming tides that can contribute to tide woes. Be sure to decide how many hours you want to commit to building sand castles.. + Alternatively, you could put down buckets or various other surfaces on the beach to catch the tide as it passes. Keep in mind that the ocean will now be subzero, and thus the sand you pile up may rise to the surface.. + Cut the paper into squares and press them between your hands. You need to break them to size.. + Dig a well for easy water access (optional). Sand castles have just two ingredients: sand and water..
Dig a well for easy water access (optional). Sand castles have just two ingredients: sand and water.