Underground and overhead, this puzzle illustrates the life and infrastructure of a large, bustling city. Children will enjoy finding details in every corner and on every piece of this massive floor puzzle. There are discoveries to be made and things to learn about throughout: subway cars, subterranean pipes, construction, and the magic and energy of urban life. The intelligent and fanciful artist Linda Bleck has created this enormous puzzle. Filled to capacity with detail and delightful moments of discovery, this puzzle covers new ground in the floor-puzzle category, making this format both a fully educational activity and a rich individual play experience. For Ages 4 and up. WARNING: CHOKING HAZARD - Small Parts. Not for children under 3yrs.