My second in the series of 3 Skyline 3-D puzzles made by Kawin Manufacturing Co, Astoria, L.I., NY. Solid wood, semi-interlocking. I already have the New York Life Building puzzle in the series (displayed below) and am missing only the Chrysler Building puzzle. Sure would like to acquire that one! Note: the Empire State Building puzzle is twice the height of the New York Life Building puzzle and is very "tippy". Is the Empire State Building really twice the height of the New York Life Building? Yes!