Introduction to the bell tower: The bell tower written by Hugo is on the third floor of Notre Dame, which is the top floor. There is a large bell weighing 13 tons in the south bell tower. The ringing sound is loud and can be heard throughout the city. It is said that the gold and silver added to the materials cast by this bell come from the dedication of devout female believers in Paris; the north bell tower has a 387 From the bell tower, you can overlook the picturesque scenery of Paris and the scenery of the Seine River.