Fanzago's astronomical clock

It is housed in a medieval tower in the southwest corner of the Palazzo Comunale [it].

[1] Dating from 1583, it was designed by local mathematician Pietro Fanzago, and still runs on its original mechanism,[2] with restorations in 1873, 1928 and 2006.

[1] The clock's dial has a diameter of 3.5 metres (11 ft).

The dial indicates the hour, the day, the month, the position of the Sun and Moon in the zodiac, the moon phase, and the duration of the hours of darkness through the year.

1583[3] That the stars are hardly moved by an obscure cause, Fanzago demonstrates by his hands and his genius.