If you also have a curiosity, I suggest that you go to see, subway line 6 or Denfert Rochereau of lineB get off, cross the road, the entrance is not very conspicuous, but you can see people queuing, need to make an appointment at the entrance, we go at 3 p.m., and make an appointment at 5:05. Tickets are 12 euros and student tickets are 10 euros. The commentator is 5 Euros, but it can be rented without good English in Chinese. The burial site is about 300 kilometers long and only 2 kilometers open. It was originally a limestone quarry where the French who died of smallpox and cholera in the 18th and 19th centuries were buried, with about 6 million to 7 million skeletons. All walks, entrances and exits are spiral ladders, and there is no bathroom inside. If there is a need, it needs to be solved in advance. It is recommended that the older and younger visitors and the more exclusive visitors do not enter the tour. Internal personal feelings do not feel very frightening, but very shocking, wandering in the meantime, may let you temporarily forget the secular world, feel another understanding of life.