Fort Mont-Valérien was built in 1841 as part of the city's ring of modern fortifications. It overlooks the Bois de Boulogne.
The fortress defended Paris during the Franco-Prussian War, and remained the strongest fortress protecting the city, withstanding artillery bombardments that lasted several months. The surrender of the fortress was one of the main clauses of the armistice signed by the Government of National Defense with Otto von Bismarck on 17 January 1871, allowing the Germans to occupy the strongest part of Paris' defences in exchange for shipments of food into the starving city.
Colonel Henry of army intelligence, a key player in the Dreyfus Affair, was confined at the prison of Mont-Valérien in 1898. The day after being confined, 31 August 1898, he cut his throat with a razor that had been left in his possession, taking to the grave his secret and that of a great part of the affaire Dreyfus.
During the Second World War, the fortress was used, from 1940 to 1944, as a prison and place of executions by the Nazi occupiers of Paris. The Germans brought prisoners here in trucks from other locations. The prisoners were temporarily confined in a disused chapel, and later taken to be shot in a clearing 100 metres away. The bodies were then buried in various cemeteries in the Paris area. More than 1,000 hostages and resistants were executed. The immense majority were members of the French Resistance.
The site now serves as a national memorial. On 18 June 1945, Charles de Gaulle consecrated the site in a public ceremony.
Today, the area in front of the memorial, a reminder of the French Resistance against the German occupation forces, has been named Square Abbé Franz Stock. During the German occupation, Stock took care of condemned prisoners here, and he mentioned 863 executions at Mont-Valérien in his diary.
There is also an American military cemetery on the site, the resting place of 1,541 American soldiers who died in France during the First World War.
References:Ogrodzieniec Castle is a ruined medieval castle originally built in the 14th–15th century by the W³odkowie Sulimczycy family. Established in the early 12th century, during the reign of Boles³aw III Wrymouth, the first stronghold was razed by the Tatars in 1241. In the mid-14th century a new gothic castle was built here to accommodate the Sulimczycy family. Surrounded by three high rocks, the castle was well integrated into the area. The defensive walls were built to close the circuit formed by the rocks, and a narrow opening between two of the rocks served as an entrance.
In 1470 the castle and lands were bought by the wealthy Cracovian townsmen, Ibram and Piotr Salomon. Then, Ogrodzieniec became the property of Jan Feliks Rzeszowski, the rector of Przemy¶l and the canon of Cracow. The owners of the castle about that time were also Jan and Andrzej Rzeszowskis, and later Pilecki and Che³miñski families. In 1523 the castle was bought by Jan Boner.