The sky train, the train on air cushion. Bertin The company developed several prototypes of this type of train. The test tracks were built in 1965. The smallest to the Gometz Chatel and the largest near Orleans, over 20 kilometers long.

The concrete track is shaped like an inverted T. The world record speed for a vehicle air-cushion was established March 5, 1974. The record speed is 430 km / h. In June 1974, the company Bertin sign a contract for the construction of a high-speed line between the town of Cergy and business district "La Défense". A few months later, the French government reversed its decision and abandon the project.

The failure of the project has several assumptions:
- The oil crisis of 1973.
- Lobbying by the company National Railways (SNCF) and the metallurgic industry.

The engineer Jean Bertin died December 21, 1975. In 1978, the permanent cessation of testing. The prototypes are still 14 years in the hangar. Then the hangar is the victim of arson. The test track Gometz le Châtel no longer exists. It has been replaced by a tunnel bypass to relieve the downtown traffic jams.

Orleans-Saran line still dominates the fields of the campaign. That would be too expensive to demolish it, especially since it nobody.

source: Wikipedia

The Degond factory is one of the oldest factories of Longueville. She moved strategically close to the station after the track railway completed. It will employ up to 800 people in the village of Longueville and surrounding areas in manufacturing seamless tubes by stretching, before closing in 2003.

The decontamination and demolition of the site would cost more than 5 million euros. The company had already been convicted in the 1990s due to pollution of the river near the village: The Voulzie. Concentrations of hydrocarbons and chlorinated compounds detected in 2007 are still worrisome.

The construction of Fort Rimplas began in 1928, shortly after Mussolini's claims concerning the district of Nice. The Organising Committee of the Regions Fortress (CORF) without knowledge of military equipment to be integrated into the fort, the work was long and subject to many changes. The 74th Brigade Alpine Fortress takes possession of the premises in 1937, although the work is still not completed. During the Second World War, its use has been anecdotal.

An association founded in early 2008, "Friends of the Work of the Maginot Madeleine," began the rehabilitation work inside and outside and opened the door to work at the Days of Heritage 2009.

source: website of the association(FR)

Like many industrial buildings, the warehouses of the ICC (International Chamber of Commerce and Industry) have been constructed to withstand heavy loads. Both buildings have followed the trend of increasing concrete, early twentieth century. In the manner of some cathedrals, the lower floors boast a strong and massive concrete pillars whose diameter decreases gradually with height in stages. This is especially evident when one observes the facade from below.

Originally, these warehouses were used to store grain and flour. In taking possession in 1929, the ICC enjoys a strategic investment (The Ourcq channel, railway) and modernized the building to add elevators, more capable than the old mobile cranes to the variety of Goods transiting.

Note: This building was the setting for the movie Dobermann by Jan Kounen (nightclub on the docks).

The Palais de Chaillot was performed at the Universal Exhibition of 1937 by the architects Leon Azema, Jacques Carlu and Louis-Hippolyte Boileau, instead of the old Palais du Trocadéro. The Chaillot Palace is composed of two pavilions and two curved wings flanking the esplanade of human rights. The facades and roof of the palace, its courtyard and terrace staircase, its remaining home decor (except theater review) have been classified as historic monuments December 24, 1980. It houses several museums.

source: Wikipedia

The quarry Montesson was used (as often) for the cultivation of mushrooms. Long abandoned, the quarry of building stone has been cut in half during the construction of the highway A14. In 2010, further work has finally destroyed this beautiful part of the quarry.

A view of the curtains of the roof of an art deco building 37 street of the Louvre. This building was built in 1934 by the architect Fernand Leroy and Jacques Cury to accommodate both newspapers Paris-Midi and Paris-Soir. Five years later, two million newspapers are coming out of the printing press in the basement of the building. The construction, modern, is fully planned for the implementation of newspapers. There is even a big diesel engine provided electricity in case of power failure. The upper floors are the most beautiful terraces where guests are received in peace, enjoying the magnificent view.
But like any business in the world war two who worked with german army, management changes hands for the release and communists newspapers took in commands: Ce Soir, Liberation, National Front (far left a newspaper) and humankind. Later Dawn and the Figaro will merge in 1985. It is said that some nights where humanity and the Figaro had printed, we brushed the confusion of pages.
This ship (as some people called the building) has been completely renovated from 2007 to 2008 and was included in the supplementary inventory of historical monuments. Some renovations are debatable but you can not stop progress.

Built in 1522, the castle of the bull is a defensive fortification. It was upgraded by Vauban in 1700. The work took about 45 years. The castle of the bull has never been a major military role. It has been used as a prison for a long time. In 1914 he was classified a historical monument. This does not prevent the Germans using it as DCA during the Second World War. After the war, the sailing school Morlaix settles for 20 years. Then in 1980, it is abandoned. Fishermen love to come and make a fire to eat but they ransacked the wood fittings. Today it is finally restored and visited by the public.

Quarries of Herblay are over 14km wide and some hundreds of meters deep, on hillsides along the Seine.

In 1776, the exploitation of new underground quarries in Paris was forbidden. People had to take the stone elsewhere. It is for this reason that the quarry was known as "Imperial quarry" or "Quarry of the city of Paris". They built many monuments in Paris with this stone because it was high quality (the famous Royal stone).

Among the monuments built, there was The Pantheon of Paris, Department of Marine Place de la Concorde, the Gare de l'Est, the mint as well as many statues at Versailles.

The network's quarries has been excessively exploited in Herblay. The ceiling is fragile and the walls separating the tunnels are very thin. To reinforce the quarry, they have added many pillars and reinforcement structures.

Later, like many underground quarries, they served to mushroom plantation in the 1980s. The workers have dug additional corridors between small quarries networks.

A few years later and they were gradually abandoned. The latest mushroom plantation closed in 1995.

Since 2003, the association "Herblay heritage" has undertaken to make public visits to the part of the "English entry" with the famous double-arched vault and pretty ponds.

Cathedral Saint-Etienne de Bourges has been built from the year 1195. Its construction lasted almost a century.

We do not know the name of the architects of the cathedral. The Gothic cathedral is original and innovative.
It was classified a historical monument in 1862. The cathedral is also on the list of World Heritage by UNESCO in December 1992.