Perched on a rocky outcrop, this islet had been inhabited since the 2nd century AD. The fortified castle, built in the Merovingian period, and the estate was to have countless occupants before coming under state ownership during the French Revolution.
The fort was built in the 13th century and was used for military purposes for most of its life, belonging to a variety of noble families as they fell in and out of power throughout the centuries. The fort was besieged several times and used as a place to escape; Queen Jeanne Ire stayed in 1348 after fleeing Naples, which had been invaded by her cousin – she used it as a pit-stop on her way to taking refuge in Marseille. The fort wasn’t badly affected by the French Revolution, although a few items were plundered by locals.
Napoleon took a liking to the fort and stayed here during the winter of 1793-94. When he became Emperor, he supplied funds to build up the garrison. After the Franco-Prussian war of 1870, the War Ministry allocated money to build an artillery, although they didn’t do much to the outside of the main structure, which was slowly falling into disrepair. It was occupied by a small garrison during World War I until it was finally decommissioned in 1919.
In 1968, General de Gaulle transformed it into one of the official residences of the President of the Republic. The monument houses numerous gifts received by heads of state during France's Fifth Republic.
The Fort de Brégançon served as the official retreat of the President of France until 2013.
References:The Clementinum is a historic complex of buildings in Prague. Until recently the complex hosted the National, University and Technical libraries, the City Library also being located nearby on Mariánské Náměstí. The Technical library and the Municipal library have moved to the Prague National Technical Library at Technická 6 since 2009. It is currently in use as the National Library of the Czech Republic.
Its history dates from the existence of a chapel dedicated to Saint Clement in the 11th century. A Dominican monastery was founded in the medieval period, which was transformed in 1556 to a Jesuit college. In 1622 the Jesuits transferred the library of Charles University to the Klementinum, and the college was merged with the University in 1654. The Jesuits remained until 1773, when the Klementinum was established as an observatory, library, and university by the Empress Maria Theresa of Austria.