The Teifoc Watermill building set lets children construct a working miniature watermill using real fired clay bricks and water-soluble mortar.

The set includes bricks, mortar, a trowel, a mixing bowl, and illustrated instructions.

The waterwheel is made of wood and is designed to rotate, bringing the model to life.

All materials are reusable—simply soak the model in water to dissolve the mortar and rebuild again.