The scary skeletal public elevators at la Grande Arche de la Défense

These are the 4 public elevators that take visitors to the top floors of the Grande Arche to access the le Toit de la Grande Arche. There are also private elevators in the walls that are used by tenants, although these also reach the top they aren't for public use. Visiting the roof costs €15 per adult. La Grande Arche is a tesseract and the side walls house offices. This was my first visit to la Défense.