At the heart of the ancient Jewish Call lie the remains of what some historians believe to be the city’s main medieval synagogue. Fragments of medieval and Roman-era walls sit in the small vaulted space that you enter from the street, accompanied by tanners’ wells installed in the 15th century. The second chamber has been spruced up for use as a synagogue. There were four synagogues in the medieval city, but after the pogroms of 1391, this one (assuming it was the Sinagoga Major) was Christianized.
The orientation (facing Jerusalem) of a remnant of late Roman-era wall has led some to speculate that there was a synagogue here even in Roman times. Guides explain what is thought to be the significance of the site in various languages.