Yeni Cami Dome, Istanbul, Turkey The construction of the mosque first began in 1597. It was ordered by Safiye Sultan, who was the wife of Sultan Murad III. The original architect was Davut Ağa, an apprentice to the great Mimar Sinan. However, Davut Aga died in 1599 and was replaced by Dalgıç Ahmed Çavuş. The construction took more than half a century and was completed by another valide sultan Turhan Hadice.