The Shalom Al Yisrael Synagogue, (lit. "Peace Upon Israel Synagogue"), dates to the late 6th or early 7th century CE and was discovered in Jericho

Jericho

Jericho ; is a city located near the Jordan River in the West Bank of the Palestinian territories. It is the capital of the Jericho Governorate and has a population of more than 20,000. Situated well below sea level on an east-west route north of the Dead Sea, Jericho is the lowest permanently...

 in 1936.
The synagogue, dating from the Byzantine

Byzantine Empire

The Byzantine Empire was the Eastern Roman Empire during the periods of Late Antiquity and the Middle Ages, centred on the capital of Constantinople. Known simply as the Roman Empire or Romania to its inhabitants and neighbours, the Empire was the direct continuation of the Ancient Roman State...

 period, was revealed in excavations taken in 1936 by Dr. Baramki of the Antiquities Authority under the British Mandate. The owners of the site kept it in excellent condition and allowed visits to the site with a small entrance fee as agreed by the British government.