Sardis was the fifth of the seven churches in the book of Revelation to whom the Apostle John wrote letters. Sardis is located near the village of Salihli, Turkey. Extensive 20th century archeological excavations have unearthed the ruins of the acropolis with the Temple to Artemis, a Roman era gymnasium complex with baths, Jewish synagogue, and Byzantine era shops. Settled in 1400 BC on the wide fertile plain of Hermus along the banks of the river Pactolus, Sardis developed into a prosperous city known for its fruit, wool and pagan temples of Delphi, Artemis, and Didyma. It became a center for trade as a crossroads of major north/south, east/west trade routes and the western terminus of the Royal Road that linked Sardis with Susa, the capital of Persia.