Map - Fort de Châtillon (Paris) (Châtillon)

Fort de Châtillon  (Châtillon)
The Fort de Châtillon was a fortification located about 5 km south of Paris in the communes of Châtillon-sous-Bagneux and Fontenay-aux-Roses. It was built in 1874 and was razed beginning in 1957, making way for expansion of the French nuclear research facility at Fontenay-aux-Roses.

The fort was named for the town it was designed to protect, Châtillon-sous-Bagneux, but the greater portion of the site is actually within Fontenay-aux-Roses. The main entry and the portions in Châtillon were destroyed at the end of the Second World War.

The site was first fortified during the Franco-Prussian War in 1870, when the redoubt of Châtillon was built by the inhabitants of the town. The works allowed the French to slow the Prussian advance on the capital and was the scene of violent combat. After the war the site was selected for further fortification as part of the Séré de Rivières system ring of fortifications around Paris. Construction on the new pentagonal fort started in 1874, not far from the old redoubt. Unlike other Parisian fortifications, the new fort was designed for action in all directions, as the location commanded much of the surrounding region. The barracks, believed to have been in three levels, were located at the center, surrounded by walls defended by a ditch and caponiers. The fort featured a number of internal traverses, mounded dikes intended as shelters against low-angle shellfire from a variety of directions.

Nearby was the Coupure de Châtillon, a fortified ditch about 150 m to the northeast of the Fort de Châtillon, defended by artillery batteries. With the Fort de Châtillon, the defenses denied the use of the Châtillon hill to an enemy who might dominate the nearby Forts de Montrouge, Issy and Vanves. The coupure consisted of eighteen traverses covered by artillery and defended by caponiers in the ditch. The entire fortification has vanished with the encroachment of urbanization.

The fort saw no particular action during the Second World War. After the French Liberation, convicted collaborators Joseph Darnand and Jean Hérold-Paquis were executed by firing squad at the fort.

After the war the fort changed vocation to serve the Commissariat à l'énergie atomique, the French atomic energy agency (CEA), and was the site of Zoé, the first French nuclear reactor. The Châtillon site was quickly superseded by a new atomic research facility at Saclay, which opened in 1952.

 
Map - Fort de Châtillon  (Châtillon)
Country - France
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France, officially the French Republic (République française ), is a country primarily located in Western Europe. It also includes overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan area extends from the Rhine to the Atlantic Ocean and from the Mediterranean Sea to the English Channel and the North Sea; overseas territories include French Guiana in South America, Saint Pierre and Miquelon in the North Atlantic, the French West Indies, and many islands in Oceania and the Indian Ocean. Due to its several coastal territories, France has the largest exclusive economic zone in the world. France borders Belgium, Luxembourg, Germany, Switzerland, Monaco, Italy, Andorra, and Spain in continental Europe, as well as the Netherlands, Suriname, and Brazil in the Americas via its overseas territories in French Guiana and Saint Martin. Its eighteen integral regions (five of which are overseas) span a combined area of 643801 km2 and contain close to 68 million people. France is a unitary semi-presidential republic with its capital in Paris, the country's largest city and main cultural and commercial centre; other major urban areas include Marseille, Lyon, Toulouse, Lille, Bordeaux, and Nice.

Inhabited since the Palaeolithic era, the territory of Metropolitan France was settled by Celtic tribes known as Gauls during the Iron Age. Rome annexed the area in 51 BC, leading to a distinct Gallo-Roman culture that laid the foundation of the French language. The Germanic Franks formed the Kingdom of Francia, which became the heartland of the Carolingian Empire. The Treaty of Verdun of 843 partitioned the empire, with West Francia becoming the Kingdom of France in 987. In the High Middle Ages, France was a powerful but highly decentralised feudal kingdom. Philip II successfully strengthened royal power and defeated his rivals to double the size of the crown lands; by the end of his reign, France had emerged as the most powerful state in Europe. From the mid-14th to the mid-15th century, France was plunged into a series of dynastic conflicts involving England, collectively known as the Hundred Years' War, and a distinct French identity emerged as a result. The French Renaissance saw art and culture flourish, conflict with the House of Habsburg, and the establishment of a global colonial empire, which by the 20th century would become the second-largest in the world. The second half of the 16th century was dominated by religious civil wars between Catholics and Huguenots that severely weakened the country. France again emerged as Europe's dominant power in the 17th century under Louis XIV following the Thirty Years' War. Inadequate economic policies, inequitable taxes and frequent wars (notably a defeat in the Seven Years' War and costly involvement in the American War of Independence) left the kingdom in a precarious economic situation by the end of the 18th century. This precipitated the French Revolution of 1789, which overthrew the Ancien Régime and produced the Declaration of the Rights of Man, which expresses the nation's ideals to this day.
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