In AD 17, it was leveled by the Lydia earthquake, called by a Roman historian Pliny the Elder, “the greatest earthquake in human memory.”  The Roman emperor Tiberius assisted with the rebuilding of Sardis, in honor of whom they erected a statue and minted a coin.       

The remains of the ancient city are located in the Aegean region of Turkey, in the modern day town of Salihi.

“Nevertheless you have a few names in Sardis that didn’t defile their garments. They will walk with me in white, for they are worthy." (Rev 3:4)

The modern town of Salihi stands on the location of ancient Sardis.

Main Attractions

The archaeological remains of Sardis include:

The Temple of Artemis

The Altar of Artemeis

The Theatre, Stadium, and Lydian Terraces

The Gymansium-Bath complex

The Synagogue

The Jewish Synagogue in Sardis is one of the most impressive archaeological remains of any Jewish synagogue in antiquity, and is connected with the Gymnasium/Bath complex.  

See the links below for further information and exploration. 

References:

https://en.wikipedia.org/wiki/Sardis

https://www.ancient.eu/sardis/

https://en.wikipedia.org/wiki/Sardis_Synagogue

http://sardisexpedition.org/en/essays/about-artemis-temple

http://sardisexpedition.org/en/essays/about-wings-over-sardis