 The Zytglogge 's exterior was repainted by Gotthard Ringgli and Kaspar Haldenstein in 1607 – 10 , who introduced the large clock faces that now dominate the east and west façades of the tower . The corner towerlets were removed again some time before 1603 . In 1770 – 71 , the Zytglogge was renovated by Niklaus Hebler and Ludwig Emanuel Zehnder , who refurbished the structure in order to suit the tastes of the late Baroque , giving the tower its contemporary outline . 
