Jewish quarter of Barcelona
... that the Ancient Synagogue in the Jewish quarter of Barcelona is one of the oldest synagogues in Europe?
... that the <a href="./Ancient_synagogue_(Barcelona)" id="mwApU" rel="mw:WikiLink" title="Ancient synagogue (Barcelona)">Ancient Synagogue</a> in the <b id="mwApY"><a href="./Jewish_quarter_(Barcelona)" id="mwApc" rel="mw:WikiLink" title="Jewish quarter (Barcelona)">Jewish quarter of Barcelona</a></b> is one of the oldest synagogues in Europe?