Mapping the building of Manhattan, Morphocode’s Urban Layers project shows construction peaks in 1900, 1910, and 1920, with nominal peaks at 1930, ’40, and ’50 also — after that it’s a pretty flat but consistent line. Which is amazing, since one might think the island is fully built upon, but the timeline shows staggering development in the borough still during the years of 2000-current — 1,549 buildings in that time!! Which is only to say that the folks at the Queens Museum panorama must surely be busy.