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Founded: 11th centuryCategory: Castles and fortifications in Germany
Historical period: Salian Dynasty (Germany)
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Castle Treis ruins are situated 70 m high on a promontory and is flowed around by the streams Flaumbach and Dünnbach, both coming down from the Hunsrueck. Today’s appearance is dominated by the mighty restored square-tower. Additionally, there are remains of other buildings of the circular wall maintained.
The exact date of the castle's construction is unknown; Treis Castle may have been built as early as in the second half of the 11th century. The first reliable record of Treis Castle dates back to 1121. That year, Emperor Henry V destroyed a castle at Treis, built by Otto I, Count of Salm. In 1148, Treis castle was held by the Count Palatine of the Rhine, Hermann III of Stahleck. In the course of a dispute over the office of Count Palatine between Hermann III and Otto I, Treis Castle came under influence of the diocese of Trier. Ultimately, the Archbishop of Trier, Albero de Montreuil conquered Castle Treis, making it property of the diocese. It appears that during the 12th and 13th century, the castle would have been controlled by the Archdeacon of Karden. In the late 13th century, there is clear evidence for the castle being owned by the Electorate of Trier and thereby being under direct control of the Archbishop.
During the Palatine succession war in 1689, Treis Castle has been destroyed by French troops, and not been rebuilt.
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.