The Prison Tower, built between 1256 and 1344, was the second city gate into Bern. The name "Käfigturm" literally means cage tower, a reminder that the tower gate was once used as a prison (1643 - 1897). The clock mechanism was added in 1691 and is of great historical interest today.
The Prison Tower's Information Center offers visitors many interesting publications free of charge. These provide information about the government and the Parliament or topics currently on the federal government's agenda.
Moreover, it offers citizens modern facilities for their own political events. The rooms are used to host around 400 events each year.