Notre-Dame Towers The climb starts with 255 steps up the North Tower. Then cross over to the Galerie des Chimeres, which will give you a bird’s eye view of the amazing carved stone monsters. Kids love this! It’s another 147 steps to the Bourdon, which is a giant bell located on the roof. You'll have a spectacular panoramic view. This is the home of Victor Hugo's famous character "The Hunchback of Notre-Dame".