The Ancient Synagogue of Barcelona contains architectural and archaeological elements spanning several historical periods. Its foundations and walls include remains dating to the 3rd century from the Roman era, while the building was significantly renovated and expanded in the 13th century, when it functioned as a major synagogue. The Archaeological Room preserves the original floor level, located about two meters below today’s street level, illustrating the gradual rise of the city over time.This Barcelona synagogue is new to me.Among its key features is a section of Barcelona’s Roman wall dating to the 3rd to 4th century, built using the opus africanum technique, characterized by large vertical stone blocks (pillars) alternating with horizontal blocks. One stone bears the Roman numeral XIIX (18), which corresponds to the Hebrew word Chai, life, a detail some researchers interpret as suggesting earlier religious significance at the site.
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