The town of Kętrzyn (until 1946 Rastenburg) was founded by the Teutonic Knights at the Prussian settlement called Rast. Initially there was a wooden watchtower, around which developed a settlement. In 1357 the commander of Bałga Johann Schindekopf granted the settlement civic rights. Shortly thereafter, in the city began construction of the defensive church dedicated to St. George, castle and defense walls.
The Kętrzyn castle was raised in the second half of the 14th century in the south-west corner of the urban battlements. Castle contained a chapel, bakery, kitchen, mill, malt house, brewery, the meat store, grain silos, storage, armory and a powder magazine. The most representative northern wing was occupied by pfleger - prosecutor, official position of the Teutonic Order. After the year of 1525 the castle became the county seat of the Duke of Prussia. In 1910 the castle was taken over by the municipal authorities, Until World War II there was a finance office and housing for authority officials. Initially it had a triangular winged structure, closed on the west side wall with a gate. Numerous of reconstructions over the centuries, adapting the object to perform administrative functions and residential buildings changed the face of the object. In January 1945, the castle was burnt down. During the reconstruction of the castle was restored in the years 1962-1966 the Gothic character of the building. Currently in the Kętrzyn's castle are functioning: the public library and museum by the name of Wojciech Kętrzyński, and as well as with the interesting regional collections.
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.