The event is being held July 10 from 9:30 a.m. to 1 p.m. at the South Inlet Day Area, south of the Indian River Bridge.
A panel will judge the sand creations and prizes for the best sandcastle will be awarded at 2 p.m. Teams can have up to five participants and categories include 12 and under as well as an all-age team.
All levels are welcome ranging from the experienced to amateurs.
Spectators are encouraged to attend.
Admission is free and parking is $4 for Delaware vehicles, $8 for out-of-state.
The rain date is scheduled for Saturday, July 17 from 9:30 p.m. to 1 p.m.