Astronomy in the Clock

One of the main attractions at the Old Town Square in Prague is the Astronomical Clock which occupies the lower part of the Gothic tower associated to Prague's Old Town Hall.

The clock was installed in 1410 and was re-engineered in 1490 to what we see today. It has been working correctly round the clock since its major repair in 1570.

On the hour, the twelve Apostles will appear through the two windows above the mechanical clock and nod their heads to the observers occupying the street in front of the Old Town Hall.

This mechanical clock tells not only time but the sunrise and sunset hours as well. There is a moon phase too. If you are not into all these, then you can also appreciate all the artworks put into this giant-clock masterpiece.