This award-winning puzzle recreates San Francisco's famous skyline, not only in three dimensions using scale-model buildings, but also along the fourth dimension of time, spanning over 100 years of architectural history. The puzzle includes 97 plastic building replicas that depict the city as it appeared as far back as 1882 through to 2009 with the addition of the Millennium Tower. The puzzle includes such iconic structures as the Golden Gate Bridge, Alcatraz, China Town Gate, and the Transamerica Pyramid. The buildings fit into pre-cut holes in a traditional 2D jigsaw puzzle that form the city's street layout. The product includes a Time Poster that directs you through time as you rebuild San Francisco's skyline history.