When the Turks emerged as the ruling power in Delhi, they introduced many new architectural features. Some of them are as follows:
1) Arches and domes: The finest innovations of this period included arches and domes. The pre-Turkish forms of lintels and beams were replaced by arches and domes.
2) Dome chamber: Buildings such as Qutab Minar and Adhai-din-ka-Jhonpra were constructed in which the dome was raised with the help of corbelled courses.
3) Decorative features: Decorative features like calligraphy, arabesque and geometry became bolder. Calligraphy was the most important element of decorative art. Quranic sayings were inscribed on the buildings and they were written in a script called Kufi.
4) Coloured tiles: Coloured tiles were used to decorate buildings.