Use your imagination to construct architectural wonders the world has never seen! Use the modular building system to add and stack floors in any number of configurations. Decorate your creation with the included furnishings and accessories. Then wire It up with electric gadgets, like an elevator, house-to-house Tramway, automatic nightlight, and motion-detected Intruder alarmludes: 10 base boards, 20 posts, battery post, stairs, 2 spindles, 50 punch-out wall/floor panels and accessories (8 sheets), 8 Jumper and extender wires, forward/back switch, 2 yellow LED lights, Red flashing LED light, flickering LED light, Light sensor, switch, push button, speaker, motor, and 32-page construction activity book