The most prominent example of Sigismund's architectural legacy is a funerary monument in the form of a chapel at Wawel Cathedral. It was constructed between 1519 and 1533 according to plans by Bartolomeo Berrecci of Florence, and serves as a mausoleum of the last Jagiellons. The exterior dome is gold-plated and interior tombs made of marble were designed by Santi Gucci. Historians, experts and architects unanimously voted the chapel as "the most beautiful example of the Tuscan Renaissance north of the Alps". The monarch also commissioned a 12.6-tonne bell which was named in his honour. The Royal Sigismund Bell was installed 13 July 1521 on Wawel Cathedral's northernmost tower. Apart from religious and national holidays, the bell rung on some of the most significant moments in Polish history and is one of Poland's national symbols.