Structural Engineering Bridges & Skyscrapers 323 PiecesExplore the exciting world of structural design with the Structural Engineering Bridges & Skyscrapers set an engaging and hands on educational resource designed to teach children the fundamental principles of mechanical physics and engineering. With 323 durable plastic components, students aged 6 years and over can construct a variety of real world structures, including truss bridges, arch bridges, suspension bridges, cable stayed bridges, and