Chandni Chowk is a street market square located in Old Delhi, India. One of the oldest and busiest markets in Delhi, the Mughal-era Red Fort straddles the eastern fringes of Chandni Chowk. It was built in 1650 by the Mughal Emperor, Shah Jahan, and designed by his daughter, Jahanara. The street spanning the market was historically divided by canals, engineered to reflect moonlight. These canals have since been closed and destroyed following British occupation, leaving behind a transformed urban landscape predisposed to congestion and chaos. It remains one of India's largest wholesale markets.