A creative design Transparent Tree House is built with full size bricks, a 4-story structure with height of 1.5 feet, the structure of each level is clearly visible with furniture and green plants. A lighting kit in the bricks makes the model exquisite when you turn the lights off. The set has 3495 bricks including the lighting bricks. This model is based on a real design of a glass house from Kazakhstan built around a tree. The bricks are made of ABS plastic material for long term dimensional stability, safe and nontoxic, and compatible with all major brands. The set is excellent for developing small motor skills, hand eye coordination, problem solving skills, learning to follow assembly instructions and is a fun activity for children over 10 years old.