Dubai has been called the "shopping capital of the Middle East". Dubai alone has more than 70 shopping centres, including the world's largest shopping centre, Dubai Mall. Dubai is also known for the historical souk districts located on either side of its creek. Traditionally, dhows from East Asia, China, Sri Lanka, and India would discharge their cargo and the goods would be bargained over in the souks adjacent to the docks. Dubai Creek played a vital role in sustaining the life of the community in the city and was the resource which originally drove the economic boom in Dubai. , Dubai creek has been proposed as a UNESCO World Heritage Site. Many boutiques and jewellery stores are also found in the city. Dubai is also referred to as "the City of Gold" as the Gold Souk in Deira houses nearly 250 gold retail shops.