This Architecture Set of The Red Square is designed to look like the original monument in Moscow Russia, it is composed of 2384 bricks. The set is compatible with micro blocks that are 35% the size of standard bricks. These smaller bricks allow for a much higher level of details in the construction. The bricks are made of ABS for long term dimensional stability. For children 10 years and up. The set is excellent for developing small motor skills, hand eye coordination, problem solving skills, learning to follow assembly instructions