Zytturm, Zug

The Zytturm is a 13th-century tower in Zug, Switzerland, which houses an astronomical clock. The tower, which is 52 metres high, is located on Kolinplatz in the old town centre.
The tower was constructed in the 13th century, then heightened between 1478 and 1480, taking its current form in 1557. The tower's last major renovation was in 1952. It is listed as being of National and Regional Significance, along with the city walls and other towers.
Astronomical clock.
The astronomical clock on the eastern side of the tower was installed in 1574. Underneath the clockface, the calendar dial has four hands:
Above the clockface, a rotating moon ball indicates the lunar phase.
Canton shields.
On the eastern side of the tower, below the clock, are displayed the coats of arms of the which comprised the Old Swiss Confederacy from 1353 to 1481.