Khan el-Khalili is a major souk in the Islamic district of Cairo. The site of Khan el-Khalili was originally the site of the mausoleum known as the turbat az-za'faraan, which was the burial site of the Fatimid caliphs. Later, The Fatimid cemetery was destroyed to erect a large caravanserai (khan) during the reign of the Mamluk Sultan Barquq in the late 14th century AD. Khan el-Khalili was inscribed as a UNESCO World Heritage Site in 1979 as part of Historic Cairo.