At the occasion of 600 years Anniversary of the Prague Astronomical Clock, the world exhibition "The Art of watchmaking" is held from February, 5th to March 29th, 2011. This exhibition is taking place in the Cross Hall and Knight's Hall of the Prague Old Town Hall. It is divided into three parts, the first one focuses on Prague´s Astronomical Clock, the second on Czech watchmaking and the third one on the famous Swiss and German manufacturers.