A mausoleum built in 1556, probably by Sinan, though two princelings died 40 years before that time. On the Wikipedia three sons buried here are mentioned. Şehzade Mahmud (1512, Manisa Palace, Manisa – 29 October 1520, Topkapı Palace, Istanbul, buried in Yavuz Selim Mosque); Şehzade Murad (1519, Manisa Palace, Manisa – 19 October 1520, Topkapı Palace, Istanbul, buried in Yavuz Selim Mosque); Şehzade Abdullah (c.1525, Topkapı Palace, Istanbul – c.1528, Topkapı Palace, Istanbul, buried in Yavuz Selim Mosque).