In spring 1231 Teutonic Knights crossed river Vistula at the height of Nessau and established a fortress. On 28 December 1233, the Teutonic Knights Hermann von Salza and Hermann Balk signed the foundation charters for Thorn and Che³mno. The original document was lost in 1244. The set of rights in general is known as Kulm law. In 1236, due to frequent flooding, it was relocated to the present site of the Old Town.
Torun castle was destroyed in 1454 during the Toruñ"s burgher uprising against the Teutonic Knights what in succession caused the 13-years Polish-Teutonic War ended by signing famous Second Toruñ Treaty in 1466. It was only 1966 when the ruins was explored and prepared for tourists.
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.