One of many trucks abandoned in the quarry.

One of the beautiful pond in the Herblay quarry, with some cool arm-pillars around.

This quarry is called the quarry of the bombs simply because there is an big drawing on a wall, who names the quarry. The quarry is located, like many others, in the plain of Montesson.

The oldest of the towers is also the most easily accessible. This tower is almost completely hollow, even if it is assumed that this was not always the case. The highest point we can go is the small black window. Here, an association has installed a niche falcon. Often, about 5am, he hangs in the air, turning alternately around the two towers. Sometimes we hear it scream and break this silence of the night. Guaranteed effect!

Michael Holley is the architect who designed the district Olympiads in the 70s. This district stretches from the Place d'Italie to the boulevards of the Marshals. The tower Antony and Cleopatra is unusual because it is the only one with an original form. All other towers in the area are rectangular.

The height of the tower is 104 meters. It has 37 floors (official). It largely dominates the surrounding towers.

The quarry of Annet on Marne is called "Purpled". The all quarry is in bad shape. Ceils are down on many places. See this pillar who does not support the ceil anymore...

Quarries of Paris - Showroom mineralogy of the Rue Saint Jacques.

The showroom mineralogical most famous of Paris is the Salle Saint-Jacques. It was constructed by Major Gambier in the heart of the underground quarry system of the GRS (Great South network), just false catacombs at Denfert-Rochereau, in fact ossuaries in old underground quarries.

The side benches were used to display the site's geological curiosities. At the center of the room, a staircase dummy materialized superposition of limestone beds of the place. Each step was a sample. Originally, the name of each geological layer of rock was inscribed on the front steps of each room but this was very bumpy because too many visitors have visited illegal.

Can be found in certain geological showroom more difficult to access such information.

source: website of Zedou(FR)

One of the underground cathedrals of city's Defense, so called because the vacuum is very large. Before the attacks of September 11, 2001, the underground were opened in the Heritage Days. Since then, all visits are canceled

A beautiful medieval cellar cave excavated by some groups in the area. 1800 tons of debris have been removed to give a breath of life to those underground. These caves communicate with each other on a good part of the hill. They share an old quarry, very small, very pretty and beautifully preserved.

Source: words collected during Heritage Days 2008

The Brussels courthouse was designed by architect Joseph Poelaert. Opened October 15, 1883. It was the time one of the biggest buildings in the world. Today, it is always the largest courthouse in the world. It dominates the city.