"Originally dating from the 12th century, the clock tower was gutted in 1405, and was rebuilt in stone. In 1530 the astronomical or calendar clock, showing the position of the sun, moon stars and planets as well as the month and day of the week, was constructed; and at the same time the delightful mechanical figure-play was made. This includes a jester, a parade of marching bears [CW: the namesake of the Swiss capital], a cock, a knight in golden armour and Father Time."