The oldest part of the clock, a physical interpretation of the cosmos, dates to the beginning of the 1400's. The moving figures were added much later - in the 17th century (allegorical figures) and in the 19th century (figures of the Apostles).
In 2010, Prague's Astronomical Clock - or Orloj, as it is referred to locally - celebrated its 600th anniversary with a 3D video light show that illustrated the clocks history. Read more about the 600th anniversary of Prague's Astrnomical Clock.
The Astronomical Clock is a popular free Prague attraction and a major feature of Old Town Square.
