Grab your bucket and shovel (and any other sandcastle-building tools) and head on over to the Cabrillo Marine Aquarium's free Family Sandcastle Day. The sand on Cabrillo Beach is being thoroughly wet down to prepare for sand construction; the rest is up to you!
All castle styles are welcome: moats, draw bridges, spires, windows, turrets. Don't forget to bring your camera to capture Kodak moments and your sandcastle handiwork.
The Aquarium Gift Shop has sand construction supplies available for purchase.