Mazar-e Sharif is the fourth largest city of Afghanistan, with population of 300,600 people. It is the capital of Balkh province and is linked by roads to Kabul in the south-east, Herat to the west and Uzbekistan to the north. Mazari Sharif means "Noble Shrine," a reference to the large, blue-tiled sanctuary and mosque in the center of the city known as the Shrine of Hazrat Ali or the "Blue Mosque".
It is believed by some Muslims that the site of the tomb of Ali ibn Abi Talib, the cousin and son-in-law of Prophet Muhammad, is in Mazari Sharif. Twelver Shia's however, believe that the real grave of Ali is found within Imam Ali Mosque in Najaf, Iraq, as was disclosed by the Sixth Twelver Shi'a Imam, Ja'far as-Sadiq.
The dominant language in Mazari Sharif is Persian as well as Uzbek. The city is a major tourist attraction because of its fabulous Muslim and Hellenistic archeological sites. In July 2006, the discovery of new Hellenistic remains was announced.