The metropolis of Lydia in Asia Minor. It stood on the river Pactolus, at the foot of mount Tmolus. Here was one of the seven Asiatic churches (Rev. 3:1-6). It is now a ruin called Sert-Kalessi.
Easton’s Bible Dictionary
Sardis
Name meaningprince of joy
Easton’s Bible Dictionary (1897), public domain. Text via Theographic Bible Metadata, CC BY-SA 4.0.