The 800-year-old Clock Tower (Zytglogge) is one of the most famous of Bern's landmarks - and is well worth the visit (the clock dates to 1530). Just above the western gate tower in the old section of town, this 23-meter tower is decorated with an immense astronomical clock.
Beginning at just three minutes before every hour, a circus of mechanical creatures (The Fool, The Knight, The Rooster, The Piper, and more) come out to put on a little show. Inside, you can see the popularity of this ancient structure from the 130 worn stone steps.