STEM Architecture set demonstrates the ability to build huge models of impressive size and style, discover different types of structures and build two oversized models of the Sydney Bridge and the Eiffel Tower includes a hands on activity book with theory and exciting exsperiments and quizzes with their soloutions. Stem instructions and workbooks included. Multiple builds possible. Online model plans. Fully compatable across all engino systems. Develops stem priciples. Size H37, W49, D16cm. For ages 3 years and over. Manufacturers 3 year guarantee. WARNING(S): Not suitable for children under 3 years old. Only for domestic use.