You don't have to get on a plane to see the most famous monuments from around the world! Create detailed masterpieces on a scale never seen before with nanoblock's micro-sized building blocks from Japan. Collect and build pre-historic and native animals, astronauts and Melbourne's architectural landmarks. These exciting models are for anyone aged 12+ who enjoys a challenge, puzzles, games or building, making it a great gift and desk accessory! Each nanoblock Sites to See set contains between 450-800 blocks that should take the average builder between 90-180 minutes to complete. Each model includes detailed colour instructions and spare blocks.nanoblock is a revolutionary Japanese invention that will appeal to kids over the age of 12 years, as well as the kid inside every adult.