The Islamic rule in India saw the introduction of many new elements in the building style.
The main elements in the Islamic architecture is the introduction of arches and beams, and it is the arcuate style of construction while the traditional Indian building style is trabeate, using pillars and beams and lintels. The early buildings of the Slave dynasty did not employ true Islamic building styles and consisted of false domes and false arches. Later, the introduction of true arches and true domes start to appear, the earliest example is the Alai Darwaza by the side of Qutb Minar.
The introduction of decorative brackets, balconies, pendentive decorations, etc in the architecture is an example in this regard. The other distinguishing features of Indo-Islamic architecture are the utilisation of kiosks (chhatris), tall towers (minars) and half-domed double portals. As human worship and its representation are not allowed in Islam, the buildings and other edifices are generally decorated richly in geometrical and arabesque designs. These designs were carved on stone in low relief, cut on plaster, painted or inlaid. The use of lime as mortar was also a major element distinct from the traditional building style.
The general pattern of the tomb architecture is consisted of a domed chamber (hujra), a cenotaph in its centre with a mihrab on the western wall and the real grave in the underground chamber