is a historical Romanesque church built between 1079 and 1098 by a medieval Polish statesman Palatine Sieciech. It is a rare surviving example of the European fortress church used for defensive purposes. It is one of the oldest buildings in Kraków and one of the best-preserved Romanesque buildings in Poland. It was the only church in Kraków to withstand the Mongol attack of 1241. From 1320 it was used by the Religious Order of Poor Clares. The building has been renovated many times.