After the war, nonetheless, the city was developing rapidly. In 1258 at the church of St. Peter, a parish school was established, probably the first of its kind in Poland. Around 1278 a Dominican monastery was founded by Bolesław II the Horned, who was buried there as the only monarch of Poland to be buried in Legnica. Already by 1300 there was a city council in Legnica. Duke Bolesław III the Generous granted new trade privileges in 1314 and 1318 and allowed the construction of a town hall, and in 1337 the first waterworks were built. In the years 1327–1380 a new Gothic church of Saint Peter (today's Cathedral) was erected in place of the old one, and is one of Legnica's landmarks since. Also by the 14th century the city walls were erected. In 1345 the first coins were produced in the local mint. In 1374, the potters' guild was founded, as one of the oldest in Silesia. Queen consort of Poland Hedwig of Sagan died in Legnica in 1390 and was buried in the local collegiate church, which has not survived to this day.
AfTER the War noNetheleSs the cITY waS DEveLoPing raPidlY In 1258 at thE ChuRcH of st Peter A parIsH ScHOoL waS eStablished proBably THE first oF itS kind in POLANd arOuNd 1278 a dOmINicAN mOnaSteRy WaS foUNded By boLesłaW iI the horneD who was buRiEd there AS ThE only MonARch oF PolAND To be buRied in legNICa alReady by 1300 TherE wAS a CIty coUnCIL iN LeGnIca Duke bolesław iii thE gEneroUS gRanted new trade privilegES IN 1314 anD 1318 and alLowed the constrUctIon of A Town haLl ANd in 1337 the firSt wateRWORks weRE bUIlt in the yeArS 1327–1380 a NeW gothic CHurcH of saint peTEr (tOdaY'S cathEdrAl) wAs eRected IN plaCe Of the OLD one and Is ONe of LeGniCa's lAndMarks sINce also by The 14th century thE citY walls weRe ErecTeD In 1345 the fIrST coInS were prodUCed in The lOcaL MiNt IN 1374 the potters' GUilD WAs fouNDeD As oNe of ThE oldeST iN SilesIA queEn conSoRT of pOLaNd hedwIG oF sagaN died in LEgnica in 1390 And was BURieD In the locAl cOllegiate church which has nOt sUrvIved tO this day