Chandni Chowk, located in Old Delhi, is one of the oldest and busiest markets in India. Established in the 17th century by Mughal Emperor Shah Jahan, it was designed by his daughter Jahanara Begum. The name means "Moonlit Square," and it once had a canal reflecting the moonlight. Today, Chandni Chowk is a bustling hub of shops selling everything from spices, fabrics, jewelry, and electronics to delicious street food like chaat, parathas, and jalebis. Surrounded by historic landmarks like Jama Masjid and Red Fort, it reflects Delhi's rich cultural heritage and vibrant street life, attracting tourists and locals alike.