Oleśnica Castle was erected in 1542-1561, replacing a Gothic fortress from the thirteenth century. It was the seat of the Dukes of Oleśnica until the nineteenth century. A fortified settlement was mentioned before the year 1238, and the first record of the castle dates from 1292.
After World War II, the surviving buildings held Hungarian and Italian prisoners of war. Later, there was the Soviet branch office of the International Committee of the Red Cross. In the 1970s the castle underwent another renovation and it became a branch of the Archaeological Museum in Wroclaw, until abandoned in 1993. It has since been reoccupied by the Voluntary Labour Corps.
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.