Kunming’s long history dates back to the early Paleolithic Age 30,000 years ago, when there were ancient people inhabiting the city. As time went by, these people left behind a rich heritage and many cultural relics. The Golden Horse and Jade Rooster Memorial Arches are just two of them. They were built in the reign of Emperor Xuande in the Ming Dynasty, giving them a history of 400 years at present. The Golden Horse and Jade Rooster Memorial Arches have distinctive ethnic characteristics and are considered the symbol of Kunming. One special feature of the Golden Horse and Jade Rooster Memorial Arches is that their shadows can overlap at a certain time under the golden afterglow of the sun and the silver light of the moon. This rare phenomenon forms a wondrous scene. The Golden Horse and Jade Rooster Memorial Arches are twelve meters high and eighteen meters wide, with exquisitely carved beams and painted pillars. The arch near Golden Horse Mountain is called the Golden Horse Memorial Arch, and the one near Jade Rooster Mountain is called the Jade Rooster Memorial Arch.