Cityscape recreates world famous city skylines not only in three dimensions (using scale-model buildings), but also along the axis of fourth dimension time, spanning years of its architectural history. The streets glow in the dark, emphasizing the city's glow. The online educational feature includes more than 2000 facts. Dimensions- 16.5" x 11.8" x 3" Assembled puzzle measures 18.5" x 17" x 4" Includes 1000 pieces- famous monuments, buildings, skyscrapers, bridges, and time poster that includes a history of the city For 1 or more players WARNING- CHOKING HAZARD - Small parts, not for children under 3 years of age WARNING: CHOKING HAZARD—contains small parts; not suitable for children under 3 years