This puzzle recreates Hong Kong's world famous skyline, not only in three-dimension, using scale-model buildings, but also along the fourth dimension of time - spanning 98 years of architectural history. The puzzle includes 81 building replicas that depict the Hong Kong Skyline as it appeared as far back as 1912, through to 2010 with the completion of the I.C.C. International Commerce Center. The puzzle includes such iconic structures as the Tsim Sha Tsui Clock Tower, Hong Kong Convention Center, Bank of China Tower, and the I.F.C International Finance Centre. The base of the puzzle is a traditional 2D jigsaw puzzle that forms the city's street layout, islands, and mountains. During the process of constructing the base map, one learns about Hong Kong's neighborhoods, streets, ports, and more. Once the puzzle base is complete, the vertical building of Hong Kong begins by placing 81 buildings and skyscrapers in chronological time sequence. This is done by following the enclosed 4D Time Poster. Details: Hong Kong, China over time 20" x 16" x 4" Over 1,100 pieces (puzzle pieces and buildings) Includes time poster For ages 12 and up