The large rooms upstairs 27bis of the tower CB31 are equipped with acoustic panels to eliminate echoes.

Road vehicle traffic in the underground quarry of Gouvieux. The culture chambers are separated by masonry walls.

The top floor of the main arch is completely abandoned. Renovations are planned but the halls will no longer open to the public.

The Hotel-Dieu in Lyon is a former hospital now completely empty but the roofs are a wonderful playground This was the first hospital in Lyon, built by the brothers Pontiffs in 1184.

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

those drawing are very old. The church master told me that they were done by choir childrens in the ancient times.

There are statues of saints in the niches at the bottom of the buttresses. On the left side, a niche remained empty because you can not see inside the ground. This is optimization!

In 1870, France is partly occupied by Prussian armies. Following this defeat, it sets up the Sere de Rivières system that allows for the construction of fortifications to defend Paris. It is in this context that the High Fort Buc was built. Work began in August 1874 and ended in 1880.

The Fort High Buc is part of an ensemble of two forts, Fort Villeras located in Saclay and Fort High Buc, and smaller peripheral structures.

From 1979 to 1995, the arms company Thomson amends hard to build a missile factory. The book is sometimes used by the national police, to conduct trainings in combat.

In 2010, the city has opened a contest for best restoration project site.

there are many concretions.

I called this part of the quarry "origin" cause the floor and the wall are like in the very begining.