4D Cityscape allows you to build the history of the USA over the 4th Dimension of Time. Starting with the base layer, the unique jigsaw play showcases the evolution of the USA - based on territorial expansion from the year 1783 to the 1900s. You then assemble the 2nd layer "modern" jigsaw map - which showcases the formation of all 50 states in a time sequence based on each State's date of established statehood. The third layer is constructed using the 4D Time Poster where 93 of the most famous US monuments and buildings are placed into the puzzle in the order that they were constructed. The puzzle includes 93 plastic building replicas that depict the Country as far back as 1450 to the modern day. The puzzle includes such iconic structures as Arches National Park, Mount Rushmore, and the St. Louis Arch. The buildings fit into pre-cut holes in a traditional 2D jigsaw puzzle that form the country's layout and the Rocky Mountains. The product includes a Time Poster that directs you through time as you rebuild America's famous history. Includes 950+ Puzzle Pieces, Time Poster Chart, Instructions 950-piece set Ages 8 and up Not for children under 3 years of age WARNING: CHOKING HAZARD - Small parts Recommended for 1 or more players Made in China Imported Product Specifications Package dimensions: 3.5 in x 12 in x 10.5 in Assembled puzzle measures: 26 in L x 17 in W x 2.5 in H Material & Care Plastic Wipe clean with dry or damp cloth