A distinguished figure of gothic architecture in both the Czech and the European context. A genius draughtsman, who put new construction elements (hanging boss) and principles (tracery vaults) into practice and made Bohemia one of the important centres of late Gothic architecture in Europe through their use in Czech architecture. In 1356 Emperor Charles IV summoned him to Prague to lead the building works following the death of Matthias of Arras. Parler became the second architect working on the Cathedral of Saint Vitus, he modified the original project and built the chapels and chancel on a right-angled floor plan, he also built the sacristy, the south vestibule and tower and Chapel of Saint Wenceslas and vaulted the chancel using tracery vaults. He also carved the busts in the triforium (Charles IV, Elisabeth of Pomerania and self portrait). He also designed and led the works on the All Saints’ Church within the Prague Castle complex, Charles Bridge with the Old Town bridge tower in Prague’s Old Town and also participated in the works on the Cathedral of the Virgin Mary before Týn.