A view of the Qutb Minar from the east; also showing the Alai Darwaza and Major Robert Smith's re-sited cupola; with the tomb of Adham Khan and the screen of the mosque in the distance.;A tower located in Delhi; India. It is the world's tallest brick minaret with a height of 72.5 meters (237.8 ft). The Qutub Minar is notable for being one of the earliest and most prominent examples of Indo-Islamic architecture. The Alai Darwaza is the main gateway from southern side of the Quwwat-ul-Islam Mosque. Qutb complex.Water-colour on ivory: oval; 175 by 140 mm; within a gilt frame; and framed in a velvet-lined case (presumably the original mentioned by Christie) 34 by 30 cm.