Think big, build small. Nanoblocks fit together just like any other plastic building block sets - but as the name implies, they are much, much, much smaller. The smallest piece measures 4 x 4 x 5 mm. Size is no inhibitor, though, as these sets prove. From something basic, like a polar bear (120+ pcs) or a penguin (100+ pcs) to something incredibly unique, like the grand piano (150+ pcs) or the Taj Mahal (420+ pcs) to something out of this world, like the Space Shuttle (580+ pcs), these sets pose no small challenge. A great gift idea for your construction or craft enthusiast with a penchant for detail.