mosques, and civil amenities in Delhi. He completed the construction of the Qutb Minar, which had been started by Qutb al-din Aibak. He also commissioned the Hauz-i-Shamsi reservoir to the south of Qutb Minar, and the madrasa (school) around it. He built several khanqah (monasteries) and dargahs (graves) for Sufi saints. He commenced the structure of Hamid ud-din's Khanaqa, and built the Gandhak ki Baoli, a stepwell for the Sufi saint, Qutbuddin Bakhtiar Kaki, who moved to Delhi during his reign. In 1231, he built the Sultan Ghari funerary monument for his eldest son Nasiruddin, who had died two years earlier. This was the first Islamic mausoleum in Delhi, and lies within fortified grounds, which also include the graves of other relatives of Iltutmish. Family Consorts Turkan Khatun (died after 1236; also known as Turkman Khatun or Qutub Begum), was the chief consort of Iltutmish and daughter of Qutb ud-Din Aibak. She was the mother of Nasiruddin Mahmud, Razia Sultana, Ghiyasuddin Muhammad Shah, Shihabuddin Muhammad, Shazia Begum and Qutbuddin Muhammad. She was probably the youngest daughter of Qutbuddin Aibak while her two other sisters were married to Nasir ad-Din Qabacha. Shah Turkan (probably died after 1236), was the Khudawanda (concubine) of Iltutmish and mother of Ruknuddin Firuz. She was the first royal lady taking active part in political matters during the Slave Dynasty. Turkan had been a Turkic (enslaved) hand-maid and had risen to take control of the Sultan's harem. She took this opportunity to wreak vengeance against all those who had slighted her in the past. Mother of Muizuddin Bahram (died after 1236), not much known about her but she was the mother of Sultan Muizuddin Bahram and a daughter, who married to Malik Ikhtiyar uddin Aitegin. She probably the daughter or sister of one of Iltutmish's forty chiefs. Malika-i-Jahan (died after 1246; full title: Malika-i-Jahan Jalal ud Dunya wal Din), mother of Sultan Nasiruddin Mahmud Shah. Her real name was unknown, formerly the concubine of Iltutmish but she was given the title Malika-i-Jahan during his son's reign. Her existence as Iltutmish's consort often debate, some stated she was the wife of Iltutmish's deceased son, Malik-us-Sa'id Nasiruddin Mahmud. Both she and her son was sent to live in a palace in Loni Village. After the death of Iltutmish, she married Malik Saifuddin Qutlugh Khan. Mother of Jalaluddin Masud Shah, unknown identity. Many other concubine; Sons Malik-us-Sa'id Nasiruddin Mahmud (died