The first written mention of Turnov is in a deed of King
Ottokar II from 1272. Turnov was founded around 1250 by Jaroslav and
Havel of Markvartice on a spur of rock overlooking the Jizera River. A Dominican cloister was founded by
Saint Zdislava, wife of Sir Havel. During the later
medieval period, Turnov came into the possession of the Wartenberg and Smiřický noble houses. The medieval town was frequently vulnerable to fires – it was burnt by
Lusatian crusaders in 1468 and during the
Thirty Years' War by
Swedes in 1643, as well as a conflagration in 1707. Turnov has long been known for its expertise with gemstones. It attracted many medieval
craftsmen and
artisans who produced
jewelry out the local Bohemian
garnet. The first European technical school for the processing of gemstones, metals and jewelry, nowadays the Applied Arts Secondary School, was founded in Turnov in 1884 and still exists as one of the best schools of this type in the world. ==Demographics==