When Shahjahan built the Red Fort in the latter half of the 17th century, the stretch of land between the main gate (Lahori Darwaaza) and the Naubat Khaana/Naqqar Khaana was built in the form of a covered market, Chhatta Chowk. Double-storeyed rows of shops flanked a broad central path, and an open octagonal section in the middle of the path, midway to the far end of the market, let in light and air. The shops would have sold the luxuries that would have been beloved of the fort’s occupants: jewellery, fine clothing, carpets, and so on.
Chhatta Chowk is one of the very few spaces in the fort that has retained its use. It’s still crowded with shops, and that too shops that don’t sell everyday things. It’s mostly all touristy trinkets, handicrafts, and things that make for good souvenirs.