Architecture, sculpture and painting developed also under Italian influence from the beginning of the 16th century. A number of professionals from Tuscany arrived and worked as royal artists in Kraków. Francesco Fiorentino had started work on the tomb of John I Albert in 1502, and then together with Bartolommeo Berrecci and Benedykt from Sandomierz rebuilt the royal castle between 1507 and 1536. Berrecci also built Sigismund's Chapel at Wawel Cathedral. Polish magnates, Silesian Piast princes in Brzeg, and even Kraków merchants (by the mid 16th century their class had gained economic strength nationwide) built or rebuilt their residences to make them resemble the Wawel Castle. Kraków's Sukiennice and Poznań City Hall are among numerous buildings rebuilt in the Renaissance manner, but Gothic construction continued alongside for a number of decades.