I saw a show on TV about these actually. What they do is build the main structure underneath, then cover it with a special type of sand, less or more fine then the normal stuff, i cant remember which.
I do remember them saying that the weather conditions would have to be very seriously bad to damage the scultpures.
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..there is a point when "sand castle" just doesn't cover it.
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No kidding. That stuff is amazing. I also have to wonder what they do if a rainstorm comes during the night.
I do remember them saying that the weather conditions would have to be very seriously bad to damage the scultpures.