The monument of the clock tower is the main entrance to the historical center of the city of Cartagena in Colombia, and it served as a major defense point for the city, because in cases of enemy attacks this bridge was raised to prevent pirates from reaching the city, and the clock was added to it at the beginning of the eighteenth century, and it is called The bridge is also called "boca del puente", which in Arabic means "mouth of the bridge", due to the way it is raised.