The Quwwat-ul-Islam Mosque, located next to the Qutub Minar in Delhi, was built between 1192-1196 AD by Qutub-ud-din Aibak, the first ruler of the Slave Dynasty. Many of the pillars in the mosque have clear Hindu motifs and are believed to have been taken from 27 temples demolished to build the mosque. Over time, the mosque was expanded and renovated by several subsequent rulers, blending Hindu and Islamic architectural styles. It was the first mosque built in India and is an important example of the early medieval Indo-Islamic architecture.