Astronomical clocksamazing works of engineering that are sometimes six hundred years oldcan be found throughout the world. Europe, however, has the lions share. Here are some of the more remarkable examples of the form. To say that this clock is astronomical is, perhaps, stating the obvious.Another word that might describe the Prague Orloj is exquisite.The first and perhaps most astonishing fact about this astronomical clock is that it was finished and in place in 1410, over eighty years before