Big Ben Clock Micro Size Building Blocks Set Tiny Wonders of the World Architecture Models Famous Architetural Structures from Around The World 5mm pieces that connect like Legos to Form Detailed Structures From The Base To The Top Helps To Develop Fine Eye-Finger Motor Skills and Cognitive Development Experience Hours Of Fun and Relaxation Building and Putting The Pieces Together Visual step by step instructions included Finished structure stands 3in wide x 3in long x 5in high