EMISSARY OF THE MIDDLE AGES A HUMAN MEMENTO MORI The most frequently visited monument in the historical centre of Prague – the Old Town or Prague Astronomical Clock – is rightly considered the best preserved medieval astronomical clock. Why is that? What times can be read on its astrolabe? Since when have wooden statues of the apostles made their promenade on it? What esoteric symbols do the stone statues conceal? Why did the alleged creator of the Astronomical Clock Master Hanuš have to be blinded? This book is about these and more secrets hidden in the bowels of this unique medieval work. Inspired by the calendar dial, it details important moments from the history of the Astronomical Clock in twelve chapters and in a final summary overviews its technical parameters. The Prague Astronomical Clock is revealing its secrets to you and will reward its admirers with originality and novelty.