Surprisingly, the staircase is the center of the tower. Usually, the stairs are located at the ends or in small adjacent towers.

On the top of the Lantern tower, in the center of the cathedral. The main towers behind, in the front of the cathedral are empty.

In the quarry of Meudon Montalets. The five quarry levels.

We used to come to rest in this beautiful round room during our visits to the quarry. The hole in the center of the room no longer exists. At left, behind the door, there's a view of the corridor from the heights.

On the ceiling there is a site for a large beam. There was probably a winch.

This photography was shot from the ground. In the center, you can see one of the highest room in the monument.

To go from the control center room of the reservoir to the reservoir, you have to cross the parking of France stadium.