Prague astronomical clock.
<p>The Prague Astronomical Clock or Prague Orloj is a medieval astronomical clock attached to the Old Town Hall in Prague, the capital of the Czech Republic.<br />
The clock was first installed in 1410, making it the third oldest astronomical clock in the world and the oldest clock still in operation. The clock is mounted on the southern wall of the Old Town Hall in Old Town Square. The watch mechanism has three main components — the astronomical dial, representing the position of the Sun and Moon in the sky and displaying various astronomical details; statues of various Catholic saints stand on either side of the clock; “Following the Apostles”, an hourly show with moving figures of the Apostles and other sculptures, notably a figure of a skeleton representing Death, beating time; and a calendar dial with medallions representing the months.</p>
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