Puzzling

Jared has several of these puzzles that call themselves 4D.  The 4 stands for the time dimension and there is a map of each building and the year it was built. Toronto was the first one he received and we even mounted that one and had it on display in his room for a long time. Next he got Las Vegas, Tokyo and New York. New York, by far, had the most buildings and even though it was smaller than the others, took the longest time to put together. They are currently, carefully organized into large chunks into their boxes so he can easily rebuild them when he feels like it.