Hauz Khas Complex

Hauz Khas Complex in Hauz Khas, South Delhi houses a water tank, an Islamic seminary, a mosque, a tomb, and pavilions built around an urbanized village with medieval history traced to the 13th century of Delhi Sultanate reign. It was part of Siri, the second medieval city of India of the Delhi Sultanate of Alauddin Khalji Dynasty.

The etymology of the name Hauz Khas in Persian is derived from the words ‘Hauz’: "water tank" and ‘Khas’:"royal"- the "Royal tank". The large water tank or reservoir was first built by Allauddin Khilji to supply water to the inhabitants of Siri.

Source: Wikipedia