Sandmasons is the only interlocking outdoor construction system that lets kids and parents effortlessly build massive, detailed castles. Frustration-free building is finally here.

Our patent-pending designed-in-Germany forms are built with UV-resistant ASA Plastic—the same material used for high-end automotive parts—ensuring your kit lasts for years of sun, snow, and play.

Choose the perfect kit below, from the simple Apprentice to the ultimate Master Kit, and turn your next beach day into an epic building adventure.