After days of suffering, Sigismund passed away at Warsaw's Royal Castle at approximately 2:45 am (02:45) on 30 April 1632. His close aide Albrycht S. Radziwill wrote "the autopsy on the same day in the afternoon determined that the king's internal organs were healthy. He could have lived another twenty years". His embalmed body was placed in an elaborate tin coffin decorated with soldiers, battle scenes and musical motifs, a masterpiece of 17th-century tin-making. The coffin was interred inside the royal crypt at Wawel Cathedral in Kraków on 4 February 1633.