Think you're pretty good at making sand castles? Pretty confident with that little plastic shovel and bucket, are you? Well, how about seeing some real pros take to the sand?

Eight teams of architects will compete to build awe-inspiring sand sculptures at "City Sand 2002" at the Harborplace Amphitheatre Saturday. Their goal will be to build creative and imaginative sculptures in celebration of our nation's flag.

The public is invited to watch the architects build from start to finish. Judges will evaluate the creations and choose a winner. And the public will evaluate the creations as well and will vote for the "People's Choice Award."

"City Sand 2002" is organized by the Baltimore Architecture Foundation, the American Institute of Architects, Harborplace and Whiting-Turner Contracting Co.

"City Sand 2002" runs noon-4 p.m. Saturday at the Harborplace Amphitheatre, between the Light Street and Pratt Street pavilions. Free. Call 800-HARBOR-1.