"Qawwat al-Islam Mosque. According to my findings the first mosque of Delhi is Qubbat all-Islam or Quwwat al-Islam which, it is said, Qutbud-Din Aibak constructed in H. 587 after demolishing the temple built by Prithvi Raj and leaving certain parts of the temple (outside the mosque proper); and when he returned from Ghazni in H. 592, he started building, under orders from Shihabud-Din Ghori, a huge mosque of inimitable red stones, and certain parts of the temple were included in the mosque. After that, when Shamsud-Din Altamish became the king, he built, on both sides of it, edifices of white stones, and on one side of it he started constructing that loftiest of all towers which has no equal in the world for its beauty and strength…"