You guessed it this site is about sand castles, they boast at being you best “on-line source for all things sand sculpture, including free tips for beginners, information on the best sand carving tools, updated contest and master sculptor information, related links and lots of photos.”
They have tips for both beginner builders and advanced sand sculptors. Learn basic sand stacking and check out how to build a better sand castle. Find out what tools you might need, and where you can find sand castle competitions.
This one is definitely a great site, maybe it will chase the winter blues away with some summer fun.