10 years & up. Take the next step in learning about architectural engineering and modern design with this advanced Mini Dormer Building Kit by Arckit. Use specialist components implemented in modern architecture to build professional looking structures and learn hands-on design skills early on. Can you create a structure that would work in real life? Included: Over 80 Building components: includes 14 unique components, 6x pre-printed architecture adhesives sheets, and more, A starter guide to master the basics, Free access to Arckitexture Library and Arckit Digital, and a High quality reusable box.