Built at the end of the 12th century, the Château de la Petite-Pierre is recorded from 1212. Count Hugo, either the son or grandson of the powerful Count of Blieskastel, is held as the constructor.
In 1566 the castle became the residence of George John I, Count Palatine of Veldenz, who carried out major works. The French Army occupied the castle in 1677 and in 1681 the county was joined with in France. Vauban was charged with improving the fortifications. In 1870 that the fortifications were removed.
Since 1977, the building has housed the administrative services of the Parc naturel régional (Natural Regional Park) of Vosges du Nord. In the multi-media exhibition there, a room is specifically devoted to the history of the castle.
The fortified town, with the Saint-Louis chapel, the 15th-century church choir and the bastion tower protecting the cisterns, is closely linked to the castle.
The castle is located at the end of a crest, separated from the old town by an artificial ditch dating from the beginning of the 13th century. The pentagonal keep was destroyed in the 19th century. The residence has been greatly altered but in its cellar the filtering cistern dates from the 14th century. On the southern façade are Romanesque windows. The well with Renaissance decoration, the main door with pilasters and the staircase turret date from the 16th century.
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.