Blue Mosque
In 2002, during a construction project at the north side of the Blue Mosque (Part of Silk Road Project), an ancient graveyard was revealed. This was kept secret until a construction worker alerted the authorities. Radiocarbon analysis by Allameh Tabatabai University has shown the background of the graves to be more than 3800 years old. A museum of these excavations including the Blue Mosque was opened to the public in 2006.