Called Chang'an in ancient times, Xi’an is one of the birthplaces of the ancient civilization in the Yellow River Basin area of the country. During Xi’an's 3,100 year development, 13 dynasties such as Western Zhou (11th century BC - 771 BC), Qin (221 BC - 206 BC), Western Han (206 BC - 24 AD) and Tang (618 - 907) placed their capitals here. So far, Xi’an enjoys equal fame with Athens, Cairo, and Rome as one of the four major ancient civilization capitals.