"A beautiful place, which reminds us of how tiny we are every time we raise our head, whether it is the outer or underground part. In addition, in the middle of the particle it is a real happiness to be in the innards of the earth, with its 13°C. The only negative point is the crowd, which makes all of us flock. Many do not take the time to simply observe, and advance by looking at their feet (I understand, the stairs are still slightly scrambled, especially with young children in the arms). In a very narrow path with two lines of opposite direction not well delimited, it necessarily creates a very chaotic and stressful progression. I would certainly have enjoyed it in the hollow season. In addition, very long waiting time in full sun before you can enter."