Sardis or Sardes was an ancient city best known as the capital of the Lydian Empire. After the fall of the Lydian Empire, it became the capital of the Persian satrapy of Lydia and later a major center of Hellenistic and Byzantine culture. Now an active archaeological site, it is located in modern day Turkey, in Manisa Province, near the town of Sart. 
 
In the seventh century BC, Sardis became the capital city of Lydia. From there, kings such as Croesus ruled an empire that reached as far as the Halys River in the east. The city itself covered 108 hectares including extramural areas and was protected by walls twenty meters thick. The acropolis was terraced with white ashlar masonry to tame the naturally irregular mountainside. Visitors could spot the site from a distance by the three enormous burial tumuli at Bin Tepe.